Find the correct match of grammatical function with usage for the word:
AFTER

In sentence 5, "after" is used to connect two clauses. Thus, it is used as a conjunction. Hence, 3 - 5 is a match.

Hence, the answer is option D.

In sentence 6, "after" is to describe a noun "effect. Thus, it is used as an adjective. Hence, 1 - 6 is a match.

In sentence 8, "after" is used to describe the verb "came". Thus, it is used as an adverb. Hence, 2 - 8 is a match.

Thus, 4 - 7 is the final match.