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: IT'S A GROUP THING 
Clue: (Sarah of the Clue Crew reports from Sea World in San Diego)  It's a term for a stable group of killer whales, so you could say "as alike as two whales in" one of these

SOLUTION: a pod

PROBLEM: Category: GOVERNMENT AGENCIES 
Clue: The Centers for Disease Control & Prevention is an agency of this department

SOLUTION: health and human services

PROBLEM: Category: "RUSH"IA 
Clue: This type of velvet is processed to have an uneven, slightly wrinkled surface

SOLUTION:
crushed