What is a public service announcement? a. it is a short dialogue stating personal opinions. b. it is a lengthy descriptive narrative about an event. c. it is a free commercial for a nonprofit organization. d. it is pitch to consumers to purchase a new product.

 C. It is a free commercial for a nonprofit organization.

I'd say C because they're not very long, they're informative rather than saying "buy our stuff!", and they're almost always entirely factual and not opinionated.

The answer is "he was bad enough in all conscience, but the devil himself could not temp him to turn slave-trader. satirical is a synonym for sarcastic. so when the author says that tom walker could not be tempted by the devil he does not literally mean "the devil" but he means that he is too morally upright to become a slave-trader.