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 consistency, answers should be in all lower cased letters.
PROBLEM: Category: SKIP TO MY "LU" 
Clue: It's the capital city of Zambia

SOLUTION: lusaka

PROBLEM: Category: SABRINA'S WITCH HANDBOOK 
Clue: (Hi, I'm Melissa Joan Hart)  The traditional number of witches in this group is 13; a leader & 12 followers

SOLUTION: coven

PROBLEM: Category: 3-LETTER WORDS 
Clue: A sacred sister

SOLUTION:
nun