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Why is the giant iguana a good example of Charles Darwin's theory of adaptive radiation, or the way a species adapts to its environment ?

O A. Giant iguanas live on the largest island in the Galapagos.

OB. Giant iguanas live on the smallest island in the Galapagos.

O C. Giant iguanas help each other survive.

OD. Giant iguanas are larger than other iguana species.