_________is defined as the output per unit of variable input.

Correct option is C

The correct answer is: (C) Average product

Average product is defined as the output per unit of variable input. It is calculated by dividing the total product (total output) by the quantity of the variable input used. Mathematically:

Average Product (AP)=Total Product (TP)Units of Variable Input\text{Average Product (AP)} = \frac{\text{Total Product (TP)}}{\text{Units of Variable Input}}Average Produc$$(AP)= \frac{Total product)TP)}{Units of Variable input}​$$​

For example, if a worker produces 50 units of output and there are 5 workers (labor as the variable input), the average product would be:$$AP = \frac{50}{5}$$​​=10units per worker.

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