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Which of the following statements is correct about the impact of pests on agriculture?

1. Pests primarily attack mature crops and have little impact on seedlings or young plants.
2. The brown planthopper damages rice crops by feeding on plant sap and spreading diseases.
3. Farmers have completely eliminated pest-related losses through advanced chemical pesticides.
4. The fall armyworm only affects maize crops in tropical regions and not in temperate areas.

Correct answer: The brown planthopper damages rice crops by feeding on plant sap and spreading diseases.

Solution

The passage explicitly states that the brown planthopper damages rice crops by sucking the plant's sap and transmitting plant diseases. The other options either contradict the passage or make unsupported claims. Therefore, option B is correct.

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