Interpreting antibiotic resistance trends from the graph

Steps:

• Review resistance percentages for each antibiotic from 2000 to 2016.
• Identify peaks, such as in 2015 for certain antibiotics, followed by declines.
• Correlate declines with known changes in treatment guidelines post-2015.
• Evaluate statements against graph data to find the accurate conclusion.

Why B is correct:

• Graph shows resistance peaking in 2015 for some antibiotics, then decreasing, aligning with treatment guideline changes that reduced overuse.

Why the others are wrong:

• A: Graph does not link overuse of ciprofloxacin specifically to a >20% increase; data varies by antibiotic.
• C: Not all antibiotics show higher resistance in 2016 vs. 2000; some decreased.
• D: Resistance in 2016 is not higher than 2000 for every antibiotic; declines occurred for some.

Final answer: B