Frown - the opposite of break is repair and the opposite of smile is frown
Answer:
If it is George Orwell's <em>Animal Farm</em> then his motto is "I will work harder"
→It wouldn't be A (Queen-) because of the dash.
→It wouldn't be B (There is no error in this sentence) because there's an error.
→It wouldn't be D (Is:) because you only use ":" when you're giving multiple things together.
→The answer is C (Queen;) because it's joining the sentences together. It's like having a comma in the sentence after "Queen."