I hate sitting . . . . . . . him as he always smells of garlic.

The correct answer is: B. beside

The word “beside” means “next to” or “at the side of.” In this sentence, the speaker is saying that they hate sitting next to someone who always smells of garlic.

The other options are not as accurate. The word “along” means “in a line with” or “in the same direction as.” The word “besides” means “in addition to” or “apart from.” The word “at” can mean many things, but in this context it would be most likely to mean “in the position of” or “in the place of.”

Here are some examples of how the word “beside” can be used in a sentence:

• I sat beside my friend on the bus.
• The two houses are beside each other.
• The dog lay beside the fire.

I hope this helps! Let me know if you have any other questions.