18.

Answer and Explanation

Your Answer is

Correct Answer is H

Explanation

occasion means "opportunity", so it must be followed by when to guide the attributive clause, and H is correct.

Item F: for which is wrong, because the semantics of for the occasion is wrong.

G item: which must act as a clause component, and there is no lack of components in the clause here.

Item J: Because occasion is not a location, item J is wrong.