I think it is letter c. adding a conjunction between the complete sentences. The other ones can be used on a run on sentence. Letter c. is an example of a bad way to fix a run on.
Answer: ?? the fudge? I am former english professer. did you even pass english?? if so how ?? are the silliest specimen i have ever seen in my 98 years of professering. (i am 100) btw
Explanation:
The answer is: She Sells her Hair. This question is from the Gift of the Magi right?
Answer:
the answer is "I don't like apple."
Because it was about me and an alien hanging out.