To understand global climate change, GCM models are widely used. GCM stands for which of the following? Choose the most appropriate answer from the options given below.

1.Global Circulation Model

2.General Circulation Model

3.Global Climate Model

4.General Climate Model

A1 and 3 only

B2 and 3 only ✓ Correct

C3 and 4 only

D1 and 4 only

Correct answer: (B) 2 and 3 only

Explanation

GCM most commonly expands to General Circulation Model and Global Climate Model.

Statement 1 is wrong: Global Circulation Model is not the standard reading of the abbreviation.

Statement 2 is right: General Circulation Model is a widely used expansion.

Statement 3 is right: Global Climate Model is the other accepted expansion.

Statement 4 is wrong: General Climate Model is not an established form of the term.

These models simulate atmosphere and ocean flows to project future climate change.

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