I'm pretty sure the reason your teacher said "no" is because trans fat is CURRENTLY being banned. It's not yet removed entirely, but the laws are in place for them to be.
(So I've heard from people. I'm not sure if this is accurate, but you could probably find out with a quick google search).
Hope this helped :)
Answer:
Your answer is D. "Have you read the article by the candidate who won the election?"
Answer:
the author's description of the residents of his hometown
Explanation: