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Assertion (A): Berm breakwaters suit sites where large armour rock is unavailable.
Reason (R): They use a greater volume of smaller stone and allow it to reshape itself.

  • A.A is false but R is true
  • B.Both A and R are true, and R is the correct explanation of A
  • C.Both A and R are true, but R is not the correct explanation of A
  • D.A is true but R is false

Answer: B

Both are true and the reason gives the advantage, and quarry yield often governs the choice. The reshaping must be predicted so that the final profile remains adequate. Reshaping is designed for rather than merely tolerated.

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