A moral dilemma is D, when a person's morals require taking two or more conflicting actions. It's in the name.
Answer: Romeo is a Montague and Juliet is a Capulet. They are a part of two families that have a long-lasting feud against each other that seems like it will never end. Romeo and Juliet were not able to be together because of their families, but they still made it happen.
"a. After the rain ended, the sky became blue" would contain an independent clause and a dependent clause, which makes it a complex sentence, since the latter half wouldn't be the same without the former half.