Which reason does the author give for planting trees?

Some people say that trees in a busy city are a luxury, a pleasant extra that the budget can ignore. I disagree. A single mature tree can shade a pavement on a hot afternoon, lowering the temperature where people actually walk and wait for buses. Leaves catch dust that would otherwise be breathed in, and roots absorb part of the rain that would flood the drains. Surveys also suggest that people feel calmer on streets with greenery. A city that plants trees is therefore not decorating itself; it is investing in the health and comfort of its residents.

Answer and explanation

Correct answer: B. Their leaves catch dust that would otherwise be breathed in

  1. Step 1: The author lists shade, dust, rain absorption and calmer feelings.
  2. Step 2: Dust catching is the only listed benefit that appears in the options.
Answer
Their leaves catch dust that would otherwise be breathed in.
Why not the others: Fruit sales, total noise blocking and softer pavements are never mentioned.

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