Which testing approach is MOST appropriate to ensure that internal application interface errors are identified as soon as possible?

A.
Bottom up

B.
Sociability testing

C.
Top-down

D.
System test

Explanation:
The top-down approach to testing ensures that interface errors are detected early and that testing of major functions is conducted early. A bottom-up approach to testing begins with atomic units, such as programs and modules, and works upward until acomplete system test has taken place. Sociability testing and system tests take place at a later stage in the development process.