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.
--------
Question: Category: U.S. GEOGRAPHY 
Clue: Of the USA's 50 tallest peaks, all are in Alaska, Colorado & California except this peak

Answer: mt. rainier


Question: Category: BUSINESS & INDUSTRY 
Clue: Country that manufactures the most cars per year

Answer: japan


Question: Category: WORLD CAPITALS 
Clue: Many homes in this city are heated by near-boiling water pumped in from hot springs at Nesjavellir

Answer:
reykjavik, iceland