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Assertion (A): A partly constructed breakwater is more vulnerable than the finished one.
Reason (R): Incomplete armour layers and unprotected core are exposed to the same wave conditions.

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

Answer: D

Both are true and the reason gives the exposure, and the construction sequence is planned around it. A lower design condition is sometimes accepted for the construction period. Exposure duration justifies the lower condition.

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