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Assertion (A): The kinematic method gives a reliable vertical velocity over data-sparse oceans.

Reason (R): Divergence is computed as a small difference between large wind components.

Select the correct answer from the options below.

  • 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: A

The reason is correct and is precisely why the assertion fails: the amplification of observational error makes the kinematic method least reliable exactly where the observations are sparsest. The omega equation, which depends on more robustly analysed fields, is the preferred alternative there. This is another instance of a true reason establishing the falsity of the assertion.

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