Which advice follows logically from the passage?
Antibiotics were once described as miracle drugs because infections that had been fatal could suddenly be cured. Today, however, many bacteria have developed resistance, meaning that the drugs no longer kill them. Resistance spreads when antibiotics are used too often or are not taken for the full course, because the weakest bacteria die first and the strongest survive and multiply. Doctors therefore advise patients to take antibiotics only when prescribed and to complete the course. Researchers are also looking for new drugs, but developing them is slow, and few companies invest in medicines that patients take for only a short time.
Answer and explanation
Correct answer: B. Patients should not stop a prescribed course of antibiotics just because they feel better.
- Step 1: Unfinished courses allow the strongest bacteria to survive. Step 2. So stopping early, even when feeling better, increases the risk. Answer: Patients should not stop a prescribed course of antibiotics just because they feel better. Why not the others: Keeping spares, requesting them for colds and sharing them all increase unnecessary use.
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