Upvoting all

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')