What can be inferred about reuse from the last sentence?
A glass bottle can be melted down and made into a new bottle again and again without losing quality. This makes glass very different from some plastics, which become weaker each time they are recycled. However, recycling glass still uses a great deal of heat, because the furnace must reach about fifteen hundred degrees Celsius. Some scientists therefore argue that washing and reusing bottles is better than melting them, since a reused bottle needs only water and soap. In practice, reuse works best when the bottles are collected locally, because carrying heavy glass over long distances adds to the cost and to the pollution.
Answer and explanation
Correct answer: B. It is less useful when the bottles must travel a long way to be washed
- Step 1: Distance adds cost and pollution, so local collection is best. Answer: It is less useful when bottles travel far. Why not the others: The passage says reuse works best locally, not that it is impossible or always more expensive.
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