You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

[Q]: Category: HISTORIC QUOTES
Clue: This great Prussian king is credited with saying, "An army, like a serpent, travels on its belly"
[A]: frederick the great

[Q]: Category: 10-LETTER WORDS
Clue: (Jimmy of the Clue Crew in Seattle) Used in "Hamlet", it's the common British term for the vendor I'm buying from
[A]: fishmonger

[Q]: Category: CATHOLIC PRIESTS
Clue: The priest's duty to keep your sins secret is traditionally protected by "the sanctity of" this booth
[A]:
the confessional