He sat . . . . . . . . me. A. for B. into C. after D. beside

The correct answer is: beside.

The word “beside” means “next to” or “at the side of.” In this sentence, it is used to indicate that the man sat next to the speaker.

The other options are incorrect because they do not make sense in the context of the sentence.

• The word “for” means “in support of” or “on behalf of.” It would not make sense to say that the man sat in support of the speaker.
• The word “into” means “to the inside of” or “to a state of being.” It would not make sense to say that the man sat to the inside of the speaker.
• The word “after” means “after a period of time” or “in the order following.” It would not make sense to say that the man sat after the speaker.

I hope this explanation is helpful. Please let me know if you have any other questions.