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.
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Question: Category: BODY LANGUAGE 
Clue: When vou're idle or just plain bored, you do this with your pollex digits, literally or figuratively

Answer: twiddle your thumbs


Question: Category: U.S. BODIES OF WATER 
Clue: You'll find the Big Branch National Wildlife Refuge on the shore of this big lake in Louisiana

Answer: lake pontchartrain


Question: Category: JULY 4 
Clue: On July 4, 1982 Miguel de la Madrid Hurtado was elected president of this North American country

Answer:
mexico