Which of the following software development lifecycle models requires the earliest involvement from the Test...

The agile development model requires the earliest involvement from the test analyst because it is a flexible and iterative approach that delivers software in short cycles called sprints. The test analyst plays a key role in planning, designing, executing, and reporting on the testing activities for each sprint. References =

ISTQB Certified Tester Advanced Level Overview of Syllabi1, page 10

ISTQB Certified Tester Advanced Level Syllabus Technical Test Analyst2, page 2

Understanding the SDLC: Software Development Lifecycle Explained3, section “Agile model”