Question

Drivers are used extensively in ___ development, because called methods and child modules are developed and unit-tested before their parents are developed.

Answer 1

bottom up.

Step-by-step explanation:

Bottom-up testing:-It is a integration testing which tests the lowest level components of a code first. Basically it refers to a middle phase of software testing which consists of taking units of integrated code and then testing them together, before testing code base. That's why drivers are used extensively in this approach.