He was embarrassed because everybody was laughing . . . . . . . . him? A. of B. in C. about D. at

The correct answer is: at.

The preposition “at” is used to indicate the target of an action, such as a person or thing that is being laughed at. In this case, the person being laughed at is “him.”

The other options are not as accurate. The preposition “of” is used to indicate possession or origin. The preposition “in” is used to indicate location or position. The preposition “about” is used to indicate a topic of discussion.

Here are some examples of how the preposition “at” can be used:

• The children laughed at the clown.
• The teacher was angry at the students who were talking in class.
• The dog barked at the mailman.
• The audience clapped at the end of the show.