Upvoting all answers!

Not only my brothers but also Mom loves to drench their omelets in ketchup.

Which pronoun should replace their in the sentence above?

Question 2 options:

A. his

B. her

C. his and her

D. No change is necessary.

B. (her)

it can't be A because mom is not a 'he' so wouldn't be 'his'

it can't be C because 'his and her' only accounts for 1 'he', but there are 2 brothers.

it wouldn't be D either because 'loves' is used only for a singular subject. I can't say "they loves chocolate." Remember, only singular subjects, like "she loves chocolates" (singular 'she')