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: ANIMALS 
Clue: Also called a warrigal, this wild dog is one of the few nonmarsupial mammals of Australia
dingo

Category: MUSICAL GROUPS 
Clue: This outspoken rap group led by Chuck D. took its name from a song title that ended "Number One"
public enemy

Category: ALPHABETICALLY FIRST 
Clue: Of the countries of mainland South America

argentina