McCarthy uses Alger Hiss... A
to accuse the State Department of framing an
innocent man.
B
to praise the State Department's efforts in revealing
and punishing spies.
as an example of communist corruption in the State
Department.
D
as an example of the State Department's ability to
distract the public from larger issues.

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.