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.

Category: TV TIME 
Clue: From the planet Melmac, this title TV character liked to eat cats
alf

Category: THE ROTARY CLUB 
Clue: On an airplane they're "fixed"; on a helicopter they're actually "rotary"
wings

Category: CONTINENTS BY VOLCANO 
Clue: Cotopaxi

south america