The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A material that speeds up a chemical reaction without chemically becoming involved is called:   (A) A solvent   (B) A base   (C) A catalyst   (D) Thermoplastic
['(C) A catalyst <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) A solvent \n (B) A base \n (C) A catalyst \n (D) Thermoplastic <> possible answers', '  A material that speeds up a chemical reaction without chemically becoming involved is called: <> context@']