Which of the following practices contributes the least to antibiotic or pesticide resistance?

A. A person takes the full course of the appropriate antibiotic when she has a viral infection.
B. A person takes the full course of the appropriate antibiotic when she has a bacterial infection.
C. Domestic farm animals are fed low doses of antibiotics to increase weight gain.
D. Mosquito populations in the tropics have been sprayed with DDT for about 50 years.
E. A person takes an anti-malarial drug when he does not have malaria.


Answer: B

Environmental & Atmospheric Sciences

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