Question

Which sentence correctly uses an objective case pronoun?
a. The person wearing the mascot costume is him.
b. Them played basketball for over three hours.
c. Malcolm and her went jogging this morning.
d. Dad was waving at my sister and me.

Answer 1

A. The person wearing the mascot costum is him.

Answer 2

C is the best answer.

A, him does not tell us anything
B, the grammar of 'them' is not right
D, 'sister and me' is grammatically incorrect.