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 consistency, answers should be in all lower cased letters.

Category: MOUNTAINS 
Clue: Cotopaxi, the world's highest active volcano, rises just south of Quito, Ecuador in these mountains
andes

Category: MOVIES IN MINIVANS 
Clue: Hey, Minivan!  Turn up this 2006 feature--I want to hear Larry the Cable Guy as a tow truck
cars

Category: 3M 
Clue: The highest class of the subphylum Vertebrata

mammalia