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: 20th CENTURY AUTHORS 
Clue: Ayn Rand once cited this late Mike Hammer author as her favorite popular writer
[A]: mickey spillane


[Q]: Category: JAZZ 
Clue: Louis Armstrong's mentor, this jazz "King" was ruined by dental trouble & died while working as a poolroom marker
[A]: "king" oliver


[Q]: Category: PHOTOGRAPHY 
Clue: He first took an interest in photography during a family trip to Yosemite in 1916
[A]:
ansel adams