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The decomposers
(P) and hence help to clean the environment
(Q) help in decomposing the
(R) dead bodies of plants and animals
(S) and put back various useful elements into soil, air and water.

  • A.QRPS
  • B.PQRS
  • C.SRQP
  • D.QSRP

Answer: A

Correct answer: QRPS

The sentence reads:

The decomposers help in decomposing the dead bodies of plants and animals and hence help to clean the environment and put back various useful elements into soil, air and water.

Q gives the verb and R its object, so the two cannot be separated. P and S are then the two consequences, joined in turn by and hence and and.

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