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 :)
I think it a or b but think more a sorry if I am wrong
Answer:
D
Explanation:
this is to let the reader know how he or she can contact you if there are any questions, comments, or concerns about what you have written,