Question

which word has a suffix that means \a person who does something\?
a exactly
b information
c specialist

Explanation:

The suffix "-ist" in "specialist" means a person who does something (in this case, specializes in a particular area). "Exactly" has the suffix "-ly" which is an adverb - forming suffix. "Information" has the suffix "-tion" which is a noun - forming suffix related to action or state.

Answer:

C. specialist