Strategies to Slow Antibiotic Resistance

Steps:

• Identify common measures: 1) Avoid unnecessary antibiotic use, 2) Complete prescribed courses, 3) Promote hygiene to reduce infections.
• Evaluate each: Unnecessary use selects for resistant strains; incomplete courses allows survival of mutants; hygiene limits overall antibiotic need.
• Determine impact: All three reduce selective pressure on bacteria, slowing resistance evolution.
• Select option including all effective measures.

Why A is correct:

• All three strategies minimize exposure and selection for resistance, per evolutionary principles of natural selection.

Why the others are wrong:

• B omits hygiene, which prevents infections requiring antibiotics.
• C omits completing courses, allowing partial treatment to foster resistance.
• D omits avoiding unnecessary use, the primary driver of resistance.

Not enough information on exact definitions of 1, 2, 3.

Final answer: A