One who designs, writes tests and maintains computer programs is
Verified Answer
A. User
B. Programmer
C. Designer
D. Operator
E. none of these
Explanation:
A (B) programmer is a professional who designs, writes, tests, and maintains computer programs. (A) A user operates the software. (C) A designer might design UI or architecture, but 'programmer' specifically covers writing and testing code. (D) An operator might run a system. Thus, (B) Programmer is correct.