How do you know the capitalized group of words is a dependent clause?

Question

Nancy pulled over to ask for directions BECAUSE SHE WAS LOST.

a. It can stand on its own as a complete sentence and starts with a conjunction.
b. It cannot stand on its own as a complete sentence and begins with a pronoun.
c. It can stand on its own as a sentence and begins with a pronoun.
d. It cannot stand on its own as a complete sentence and begins with a conjunction. ***

Answer 1

You are correct.