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: ACTRESSES IN HISTORY 
Clue: She was born Emilie Charlotte Le Breton on the island of Jersey in 1853
lillie langtry

Category: SOCK IT TO ME! 
Clue: It's the useful meteorological instrument seen here:
windsock

Category: OBSESSIONS 
Clue: In 1674 Anton van Leeuwenhoek's obsession with lenses paid off; he discovered these, from the Latin for "first animal"

protozoa