I think it is A... It provides details and not just saying that his book compares two religions.
I just did the test.
Complex.
Handy guide:
Simple: Independent clause. "She went to the store."
Compound: Two independet clauses. "She went to the store, and then she picked her brother up."
Complex: An independent clause and dependent clause. "She picked up her brother at the store."
Compound-Complex: Two independent clauses and at least one dependent clause. "She picked up her brother, and went to the store to get bagels."
Answer:
assuming that her is the underlined pronoun, the answer is c. possessive
Explanation:
a possesive pronoun is a pronoun that establishes or indicates the ownership of an item