Multiple choice

__ is used as the code if no cloud is present below 2500 m.

  1. 9

  2. 10

  3. 00

  4. XX
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A Correct answer
Explanation

Code '9' is used in meteorological reports when no clouds are present below 2500 meters. This is part of the standard cloud layer coding system used in aviation weather reporting to indicate clear conditions at lower levels.

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