Question

I work at my ____ store every evening. (a) mom and dad's (b) mom's and dad's (c) mom and dads (d) moms and dad's

Answer 1

I work at my mom and dad's store every evening.

( option a )

Answer 2

I work at my mom and dad’s store every evening.

EXPLANATION:

As it is a collective genitive, apostrophe and‘s’ can be added only at the last noun, which is dad here. The option mom’s and dad’s is wrong because for each noun apostrophe ands’ are added.

The option mom and dads is wrong because the punctuation – apostrophe is missing after dad. The option mom’s and dad’s is wrong because‘s’ is added to mom. So, the option mom and dad’s are right.