Pharmacy Technician Certification Exam Practice Question

Correct Answer: C

Rationale: Oxidation is a chemical reaction that can be accelerated by heat and exposure to air. Refrigeration slows down these reactions by lowering the temperature, which decreases the kinetic energy of molecules and slows the rate of oxidation.

Option A, alligation, is a method used in mixing proportions and does not relate to oxidation. Option B, distillation, is a separation technique that does not inherently slow oxidation. Option D, expiration, refers to the process of air leaving the lungs and is unrelated to chemical reactions in substances. Thus, refrigeration is the most effective method for slowing oxidation.