Problem: Choose which sentence below uses a comma correctly to combine two independent clauses (or sentences) with a coordinating conjunction.
a) We are always excited to watch our team play, yet we were so worried that they were not going to do well.
b) Enrique didn't have any idea where he was going, nor did he have any way to get there.
c) She brought a big bag of her own popcorn to the movie theater, for she was not interested in paying the theater prices.
d) Angelica brought her library books, but didn't want to return them.