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: LAW 
Clue: In Latin legal lingo it means "by the fact itself"

SOLUTION: ipso facto

PROBLEM: Category: WHAT THE "L"? 
Clue: When you sprain your ankle, you tear or twist these tissues that connect the leg & foot bones

SOLUTION: ligaments

PROBLEM: Category: NATURE STUDY 
Clue: This tall shrub is prized for the reddish dye obtained from its leaves that's used to color hair

SOLUTION:
henna