What is the primary function of a buffer solution?

• A. To decrease the pH of a solution by maintaining constant concentrations of H⁺ and OH^- ions.
• B. To neutralize all acids and bases in a solution by maintaining constant concentrations of H⁺ and OH^- ions.
• C. To resist drastic changes in pH by maintaining constant concentrations of H⁺ and OH^- ions.
• D. To increase the pH of a solution by maintaining constant concentrations of H⁺ and OH^- ions.

Answer: (C)