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Passage: An agricultural officer reports that farmers in a particular block who switched to drip irrigation used 40 per cent less water per hectare last season than those who continued with flood irrigation, yet the two groups reported almost the same yield per hectare. Which of the following can be inferred from the report?

Competition practiceLogical / Critical
  • ADrip irrigation always produces higher yields than flood irrigation
  • BEvery farmer in the block has now adopted drip irrigation
  • CFlood irrigation is harmful to all crops
  • DIn that block last season, the lower water use under drip irrigation was not accompanied by a lower yield

Step-by-Step Solution

The report covers one block in one season and states two things: less water and comparable yields. Restating exactly that is the only safe inference. The other options generalise to all places, all crops or all farmers, going far beyond the single observation reported.
Answer: D) In that block last season, the lower water use under drip irrigation was not accompanied by a lower yield

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