Use the following to answer question: 
-(Table: Exercise and Total Utility) Use Table: Exercise and Total Utility.The principle of diminishing marginal utility is seen:
Definitions:
Marginal Costs
The price of generating one more unit of a product or service.
Marginal Productivity
The additional output generated by employing one more unit of a particular resource, while holding other inputs constant.
Returns to Scale
The rate at which production output increases in response to proportional increases in all inputs.
Average Cost
The average cost is the total cost of production divided by the number of units produced, reflecting the cost per unit of output.
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