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: PRESIDENTS 
Clue: After Garfield's death, he refused to move into the White House until it was redecorated
arthur

Category: FICTIONAL CHARACTERS 
Clue: Lassiter is the gun-slinging hero of this Zane Grey novel & appears in its sequel "The Rainbow Trail"
"riders of the purple sage"

Category: FROM A TO B 
Clue: Assimilate, like a sponge

absorb