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.

Category: WEIGHTS & MEASURES 
Clue: To the Ancient Greeks, 4 of these made a palm
fingers

Category: GUILTY PLEASURES 
Clue: Trista Rehn was this 2003 TV title person
the bachelorette

Category: MAY 1996 
Clue: The Keck II telescope sitting on an inactive volcano in this state was dedicated in May

hawaii