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.

[Q]: 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
[A]: lake pontchartrain


[Q]: Category: MYTH ME? 
Clue: Serge Lifar's ballet "Icare" is based on the myth of this father & son flying team
[A]: daedalus & icarus


[Q]: Category: GROOVY 
Clue: In this artistic process, printing is done by forcing ink into grooves made by acid
[A]:
copperplate etching