Which of the following is NOT listed as a cause of antibiotic resistance?

• A. Overuse
• B. Agricultural use
• C. Patient non-adherence
• D. Misuse

Answer: (C)

The main idea here is understanding what factors are typically recognized as direct drivers of antibiotic resistance. Overuse and misuse of antibiotics clearly increase the amount and duration of exposure bacteria have to these drugs, which selects for resistant strains. Agricultural use of antibiotics extends that pressure beyond human medicine into the environment and animal reservoirs, spreading resistance genes more broadly. Patient non-adherence, while it can contribute to treatment failure and may play a role in resistance in practice, is not usually listed as a separate cause in standard discussions of resistance drivers. It’s often considered a behavioral outcome or a facet of misuse rather than a primary, standalone driver. So the option identified as not listed as a cause fits this interpretation: it can influence outcomes, but the classic lists emphasize overuse, misuse, and agricultural use as the direct causes.