The domain and range of an identity function is .

R (Real numbers)

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N (Natural numbers)

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Z (Integers)

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Solution

The correct option is A R (Real numbers)
An identity function has the same range and the same domain. Each element in the domain is mapped to the same element in the co-domain. Since, the domain is R for an identity function the range will also be R. Hence, the answer is R.

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