TASK DEFINITION: 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.
PROBLEM: Category: JACK LEMMON FILMS 
Clue: In "The China Syndrome", Lemmon played the executive of this type of plant

SOLUTION: nuclear power plant

PROBLEM: Category: OPTICS 
Clue: On New Year's or any other day, it's the fineness of detail that can be distinguished in a photographic image

SOLUTION: resolution

PROBLEM: Category: ENGLISH LITERATURE 
Clue: The 5th edition of this work, published in 1676, included a section on fly fishing by Charles Cotton

SOLUTION:
the compleat angler