TASK DEFINITION: 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.
PROBLEM: Category: BUMPED FROM THE COVER OF TIME 
Clue: A cover titled "Declining American Birthrate" was canceled in 1974 when this man was pardoned

SOLUTION: richard m. nixon

PROBLEM: Category: I'M JUST RUNNING IN FOR... 
Clue: ...20 first-class stamps, which will now cost this much total

SOLUTION: $7.40

PROBLEM: Category: "W"ORDS 
Clue: To sharpen a tool, or to stimulate the appetite

SOLUTION:
whet