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: GREEK ISLANDS 
Clue: One island is the supposed burial place of this reckless mythical flier, & is named for him
icarus

Category: FRENCH CLASS 
Clue: If you approach the signal called feu rouge on a French road, you'd better do this
stop

Category: TIME FLIES 
Clue: Because the earth rotates as it orbits, a sidereal day, based on the stars, is about 4 minutes shorter than this day

a solar day