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.

[EX Q]: Category: SIGNS & SYMBOLS 
Clue: Created in 1970 & made up of 3 arrows, the universal symbol for this was based on the Mobius strip
[EX A]: recycling

[EX Q]: Category: 20th CENTURY AUTHORS 
Clue: A novel set during the Depression earned this author a 1940 Pulitzer Prize & contributed to him winning a Nobel Prize in 1962
[EX A]: john steinbeck

[EX Q]: Category: BIOGRAPHY SUBJECTS 
Clue: One critic called Peter Martin's book about him "the best biography of the greatest biographer in the English language"
[EX A]:
james boswell