Which TWO of the following test tools would be classified as test execution tools?

The test tools that would be classified as test execution tools are D. b and d. Test execution tools are tools that automate the execution of test cases or test scripts, and compare the actual results with the expected results. Test execution tools can also record and replay user actions, generate test data, and report test results. Test harness and test comparators are examples of test execution tools. A test harness is a tool that creates a test environment for a component or system under test, by simulating the required dependencies, such as stubs, drivers, or mock objects. A test comparator is a tool that compares the actual outputs of a component or system under test with the expected outputs, and reports any differences or anomalies. A detailed explanation of test execution tools can be found in A Study Guide to the ISTQB® Foundation Level 2018 Syllabus, pages 111-1121.