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.

[Q]: Category: THE 1970s 
Clue: G. Gordon Liddy, E. Howard Hunt & Egil Krogh were nicknamed this because they "plugged leaks"
[A]: plumbers


[Q]: Category: U.S. GOVERNMENT FIRSTS 
Clue: The first of these was authorized in 1790, "providing for the enumeration of the inhabitants of the United States"
[A]: a census


[Q]: Category: CHILDREN'S AUTHORS 
Clue: This author & illustrator has said, "Max is like my demented son and he's taking care of his father for life"
[A]:
maurice sendak