This developer commentary is most likely to motivate a tester because it acknowledges the tester's contribution in finding a defect that affected the product's functionality and compatibility. It also shows that the developer took the defect seriously and fixed it promptly. This commentary demonstrates respect and appreciation for the tester's work and fosters a collaborative relationship between the developer and the tester. 21 inspirational quotes about software testingWhat motivates you - Take the Motivation Test References:
* 21 inspirational quotes about software testing - Testlio
* What motivates you - Take the Motivation Test | SeeMyPersonality

As the review leader, one of your responsibilities is to plan the review process and select the review items and the appropriate review type for each item1. This activity should be done in the early planning stages of the project, as it will help to define the scope, objectives, and schedule of the reviews. The review items are the work products that will be reviewed, such as requirements, design, code, test cases, etc. The review type is the level of formality and rigor that will be applied to the review, such as informal review, walkthrough, technical review, or inspection2. The selection of the review items and the review type should be based on factors such as the criticality, complexity, and risk of the work products, the availability and expertise of the reviewers, the time and budget constraints, and the expected benefits and outcomes of the reviews3. Therefore, option A is the correct answer. Option B is incorrect because gathering metrics to determine the success of the review process is an activity that should be done after the review process is completed, not in the early planning stages. Option C is incorrect because calculating the ROI for the review process is an activity that should be done after the review process is completed, not in the early planning stages. Option D is incorrect because setting a minimum number of defects to be identified in each review is not an appropriate activity for the review leader, as it may create a false sense of quality or pressure on the reviewers. Reference: 1: ISTQB Advanced Level Test Manager Syllabus, Section 2.2.3 2: ISTQB Advanced Level Test Manager Syllabus, Section 2.2.2 3: Review Types - Testing Traveler, the post about review types

Performance testing is the process of determining the speed, responsiveness, and stability of a system under a given workload1. Performance testing should be started as early as possible in the software development lifecycle, preferably during unit and integration testing, to identify and resolve performance issues before they become costly or risky2. Starting performance testing early can also help to validate the performance requirements, design, and architecture of the system, as well as to optimize the performance testing strategy and scope3. Therefore, option A is the correct answer. Option B is incorrect because deferring the start of performance testing until all functional defects have been resolved can delay the detection and resolution of performance issues, increase the cost and effort of performance testing, and reduce the confidence and quality of the system4. Option C is incorrect because leveraging end users to do unit-level performance testing and automated tools for system-level performance testing can introduce inconsistency, bias, and inefficiency in the performance testing process, as well as compromise the reliability and validity of the performance test results. Option D is incorrect because requiring all performance tests to pass before starting functional testing can create unrealistic or unnecessary expectations, as well as hinder the progress and feedback of the functional testing activities. Reference: 1: ISTQB Glossary, Performance Testing 2: ISTQB Certified Tester - Performance Testing (CT-PT)3 3: ISTQB Performance Testing - TesterYou4 4: Performance Testing - ISTQB not-for-profit association : ISTQB - PERFORMANCE TESTING : Performance Testing - ISTQB not-for-profit association

A model-based testing strategy is a testing strategy that uses models to represent the desired behavior and structure of the system under test, and to derive test cases, test data, test procedures, and test oracles1. A model-based testing strategy requires an activity to select an appropriate quality standard, such as ISO 9126, to be used to guide the testing. A quality standard is a set of criteria, guidelines, or characteristics that define the quality attributes of a software product, such as functionality, reliability, usability, efficiency, maintainability, and portability2. A quality standard can help to define the quality requirements, objectives, and measures for the system under test, and to evaluate the quality of the test results and the test process3. Therefore, option C is the correct answer. Option A is incorrect because conducting a quality risk analysis with all affected stakeholders is not an activity specific to a model-based testing strategy, but rather a general testing activity that can be applied to any testing strategy. A quality risk analysis is a process of identifying and assessing the quality risks that may affect the system under test, and prioritizing them based on their impact and likelihood4. Option B is incorrect because conducting operational profiling to determine the expected usage of the system is not an activity specific to a model-based testing strategy, but rather an activity related to a usage-based testing strategy. An operational profile is a statistical representation of the relative frequencies of the inputs, operations, and operating conditions of a system in its operational environment. Option D is incorrect because creating the test charters for the exploratory testing sessions is not an activity specific to a model-based testing strategy, but rather an activity related to an exploratory testing strategy. A test charter is a document that defines the scope, objective, and approach of an exploratory testing session. Reference: 1: ISTQB Glossary, Model-Based Testing 2: ISTQB Glossary, Quality Standard 3: ISTQB Advanced Level Test Manager Syllabus, Section 1.3.1 4: ISTQB Glossary, Quality Risk Analysis : ISTQB Glossary, Operational Profile : ISTQB Glossary, Test Charter : Model-Based Tester - ISTQB not-for-profit association : ISTQB Model-Based Testing Certification - ISTQB Exams Worldwide - ISTQB ... : ISTQB - ABOUT MODEL-BASED TESTER EXT. : ISTQB Certified Tester - Model-Based Tester (CT-MBT)