What does fire require to get started?\nOptions:\n- (A) an engine\n- (B) activation energy\n- (C) water\n- (D) energy usage\n- (E) direct energy\n- (F) dogs\n- (G) activated almonds\n- (H) adding heat Let's solve this problem gradually.

User
All chemical reactions require activation energy to get started. Fire is a chemical reaction. Fire requires activation energy to get started. So the final answer is (B).
Assistant