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Discussion

Assertion (A): The physical basis of seeding is better established than its operational effectiveness.
Reason (R): Laboratory and plume studies confirm the microphysics that field trials struggle to demonstrate.

  • 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 gap between the two, and delivery and evaluation account for much of it. A sound mechanism does not guarantee a measurable operational result. Delivery and evaluation account for much of the gap.

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