The domain of a function is:

Answer: B. The set of all possible input values — The domain of a function is the set of all possible input values that the function can take.

1. A.

   The set of all possible output values

2. B.

   The set of all possible input values

3. C.

   The set of all possible pairs of input and output values

4. D.

   The set of all possible functions that can be formed

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