Final answer:
Profit is maximized at the point at which marginal cost is exactly equal to marginal revenue. The correct option is D.
Step-by-step explanation:
Out of the given options, the statement that is true about marginal analysis is D) Profit is maximized at the point at which marginal cost is exactly equal to marginal revenue.
Marginal analysis is an important concept in economics and is used to determine the level of output that maximizes profit for a firm.
It involves comparing the marginal cost of producing an additional unit of a good or service to the additional revenue gained from selling that unit.
When marginal cost equals marginal revenue, it means that the additional cost of producing one more unit is equal to the additional revenue generated from selling that unit, resulting in maximum profit for the firm. The correct option is D.