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: ONCE THEY WERE ANGELS 
Clue: She's had a clothing line at K-Mart since 1985
jaclyn smith

Category: HISTORIC QUOTES 
Clue: This great Prussian king is credited with saying, "An army, like a serpent, travels on its belly"
frederick the great

Category: IN THE MEDICINE CABINET 
Clue: This product's website features chemistry experiments like "The Effect of Temperature on Rate of Reaction"

alka-seltzer