Hey There! :)
The answer to this question would be the second choice.
<span>"Brutus told you Caesar was ambitious. If it's true that Caesar was, then it wasn't a good thing, and he's been punished for it."</span>
When I was at the debate John’s speech sounded natural, but I could tell it wasn’t premeditated.
The only preposition in the options available to you is of, so the correct answer is C.
A) and B) are conjunctions.
D) is an adverb.