The error is in part (D). The correct preposition to use when inviting someone to an event is "to," not "on". The phrase should be "invite [someone] to your birthday party."
- Correct Sentence: Who(A) would (B) you like (C) to invite to(D) your birthday party?
Explanation:
- (A) Who - Correct.
- (B) would - Correct.
- (C) to invite - Correct.
- (D) on - Incorrect. "Invite" requires the preposition "to" to indicate the destination or purpose of the invitation.
- (E) No error - Incorrect.