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Assertion (A): Agreement between climate models is not by itself evidence that they are correct.
Reason (R): The models share assumptions, parametrisation approaches and sometimes code.

  • 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 limitation, and it is why evaluation against observations rather than against other models is what carries weight. A shared error would appear as agreement rather than as a warning.

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