Question

what is the primary purpose of unit testing in software development?
a. to test individual components or functions in isolation
b. to test the entire application as a whole
c. to improve user interface design
d. to optimize database performance

Explanation:

Unit testing focuses on verifying small, independent parts of software (like functions or components) separately to ensure each works correctly on its own before integration. Option B describes system testing, C relates to UI/UX design, and D is about database optimization—none are the primary purpose of unit testing.

Answer:

A. To test individual components or functions in isolation