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


[Q]: Category: A TRIP TO MARS 
Clue: Arnold arduously activates an ancient atmosphere appliance in this 1990 Martian big screen adventure
[A]: total recall


[Q]: Category: EXPLORERS & EXPLORATION 
Clue: In 1682 he claimed the entire Mississippi Valley for France; 5 years later, his own men killed him in Texas
[A]:
lasalle