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A hundred truck loads of boulders are being dumped into the river to

  • A.Control flood
  • B.Protect National Highway 31A
  • C.Repair embankment
  • D.Check erosion.

Answer: D

The boulders are dumped into the river to check erosion.

The passage says 'A hundred truck loads of boulders are being dumped into the river to check erosion.' The purpose is given in the same sentence.

The other options are tempting results of the work, but none is the stated purpose. Controlling flood, protecting the highway and repairing an embankment are not given as reasons for dumping the boulders.

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