The correct answer is complement.
Like you wrote above, to complete is when you make something whole. Complement is something that completes your collection. The bronze statue completed her collection perfectly, which is why it was a good complement. Somebody can give her a compliment on her complement, however, meaning that he or she can praise the statue. :)
An internal conflict is an example with oneself (for example: should I be healthy and exercise or should i have this cake and feel happy about it;) ) - so the correct answer is <span>character vs. self.
the remaining options are external conflicts. </span>
