38.

Answer and Explanation

Your Answer is

Correct Answer is J

Explanation

sets off "sets off" according to the sentence meaning "three customers illuminated by artificial lights and a waiter set off the darkness outside" Therefore, that shines down on three customers and a waiter is a non-restrictive attributive clause guided by that Explain artificial light, no symbols can appear in the middle of the sentence, item J is correct. Item H is grammatically correct, but the sentence is wrong (the waiter can't set off the darkness outside).