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User Acceptance Testing: User acceptance testing is a black box testing that is done by the client to determine the system is acceptable or not.
White Box testing is done by the developer to verify the internal source code of the system
Grey box testing is the combination of black box and white box testing
Therefore, black box testing is correct answer.

The software development phases are- Requirement, design, coding and then implementation.
If any defect is introduced in any phase, then that defect creates multiple defects in other stages. If the requirement is wrong, then we have to apply changes in every phase of development ie; design, coding, implementation and also in requirement.

Therefore, requirement gathering is the correct answer.

Pareto principle is also known as 80-20 rule. It is used to define the 80% of your work will be completed in 20% of the time and 20% of your work will need the remaining 80% of your time.
Therefore, it is known as 80-20 rule.

Preventive: The cost of activities that are used to prevent defects as statistical process, training etc.
Appraisal: It includes those activities that are used to identify the defects before the product go live.
Failure: The cost of the product or software that failed to satisfy the requirement.
Therefore, Testing comes under appraisal category.

Incremental testing is a technique of integration testing. It is used to integrate the each tested module into a system. It has 2 forms: Incremental and horizontal. Incremental form has 2 strategies – top-down and bottom-up.
Therefore, option C is not related to the incremental testing.

Test Plan is a document that defines or explains the approaches or ways used for testing of the application or system. Part of test plan: Test plan identifier, Test items, Features to be tested, Features not to be tested, Approach, pass/fail criteria, Testing tasks, Responsibilities, Schedule, Risks and contingencies, Approvals.
Therefore, Mission is not part of the test plan.

Error Guessing is a validation technique that is used to find out the defect in the system based on the experience of the tester. Error guessing doesn’t have any predefine rule for testing it is based on tester’s skill or experience. It is a test data management technique.
Therefore, only the last option is correct.

Function Point: It is used to measure the size of the application or system.
Expert Judgment: It is a cost estimator that is used to make a judgment or assumption about the cost of the develop product.
Top-down & Bottom-up: These are the integration techniques that are used to integrate all unit modules into a single system.
Therefore, expert judgment is the correct answer.

Inspection, Walkthrough and Review are the formal review process that is used to verify the document, requirement, code, design. These are focused on the review process for preventing the defects.
Quality Control is the process to verify the quality of the product or software by executing the test cases and identify the defects.
Therefore, Quality control is used to verify the product.

Code inspection is a formal review by evaluating the source code for preventing the defects multiplication.
Code Inspection is a kind of static testing technique.
Therefore, false is the correct answer.

The Quality control is the validation technique; it is the process of evaluation of the system or component to determine the product is meeting the client requirement.
The quality assurance is a verification technique. It is the process of evaluation of system or components to determine the developed software or product has fulfilled the specified requirement or not.
So, that’s why true is a correct answer.

Fault injection: It is a white box technique that is used by the developer to check or verify the code by inserting some wrong value in code.
Exploratory testing, model based testing and requirement testing is black box testing techniques that are used to test the system or program.
Therefore, fault injection is not a black box testing.

Grey box testing is the combination of the white box and black box testing because we have to understand the internal source code of the application.
Mutation testing is a negative testing. The developer inserts some wrong code and check the impact of the system
Glass box testing is the another name of the white box testing
All-pair testing is a type of black box testing, which is used to test the system by using each pair of input parameter.
Therefore, the last option is correct.

Alpha testing: Alpha testing is done in the development environment by developer, tester, client or high team manager to check the system is working as per the requirement or not.
Beta testing: It is done in the client side environment by client, team lead and team manager for acceptance of system to go live
Smoke testing: It is build verification testing done by the tester for acceptance of new build
UAT: It is user acceptance testing and alpha testing and beta testing is part of UAT.
Therefore, smoke testing is correct answer.

Severity: Severity means the impact of a defect or bug to the application or program.
Priority: Priority is the impact of the defect to the client business. If any defect priority is high, then we have to resolve that defect as first priority.
Intensity and Complexity are not part of defect attributes
Therefore, Priority is correct answer.

Scatter Plot Diagram: It is used to represent the relationship between those two variables related to the same event.
Bar Chart Diagram: Bar chart diagram is similar to histogram diagram.
Histogram diagram: Histogram is used to represent the data in graphical form by using different size of the bars
Run chart diagram: It is also known as run sequence plot that is used to represent the execution of statements in graphical form.
Therefore, the Scatter Plot diagram is correct answer.

Exit criteria is defined in the test plan document. It is a set of conditions that is used to define when to stop testing activity.
Therefore, only Option C is correct.

Baselining: It is the process to validate the requirement document which are used to create test cases.
Benchmarking: It is a method for measuring performance of the system or product and it is also used to compare the process by running the program on different computers for improvement of the process.
Benchsetting and benefit realizing are not related to the improvement process.
Therefore, Benchmarking is correct answer.

Defect removal rate: It is Defect removal efficiency (DRE). It is used to calculate the number of defects are in resolved states.
Defect Density: It is used to calculate the overall defect found in particular software.
Mean time to failure: It is used to calculate the expected time period for system failure.
Coverage metrics: It is used to calculate the coverage of code, statement coverage , line coverage etc.
Therefore, the correct answer is defect density.

Size of module: It is not related to any size, measurement of software
KLOC: It is used to measure the number of lines of source code in the program
Function point: It is used to measure the functions of the software
Pages of document: It is used to measure the number of pages in requirement
Therefore, size of module is correct answer.

Pareto principle or chart is also known as 80-20 rule.
Therefore, Pareto chart is the correct answer.

Fishbone diagram is also known as Cause–and–Effect Diagram or Ishikawa Diagram. It is used to identify the cause or reason of the defect or problem.
Therefore, Ishikawa diagram is correct answer.

Control chart: This chart is used to represent wheather the process is in control state or not ie; the state should be not less than lower limit or not greater than upper limit.
Run Chart: It defines the graphical representation of the process execution.
Bar Chart: It displays the graphical representation of data by using the different size of the bars.
Resource Chart: It is used to represent the utilization details of the resources.
Therefore, Control chart is the correct answer.

Functional testing techniques: It is a Black box testing techniques that are used for tests the functionality of the application. Like: Input domain testing, Boundary Value, Syntax checking, Equivalence Partitioning.
Structural testing technique: It is a white box testing technique that is used to examine the internal structure of a program.
Code coverage technique and statement coverage technique are used to calculate the coverage of the code.
Therefore, Option C is correct.