The answer is C. the death of a maiden helped create it
No, this is not a run-on sentence
A novel can have loads and loads of conflicts big and small, while a short story has only one conflict. The characters in a novel are usually dynamic and are better described, while characters in short stories are poorly described and are usually static.
I believe that it is D. I apologize if I'm incorrect.
The sentence that is correctly construed with an independent clause and a dependent clause is A) As they examined the evidence afresh, they thought of a completely different explanation.
The other sentences don't have dependent clauses, only phrases.