If economic profit is zero, a firm will earn exactly a normal rate of return.
So, the correct option is D.
In terms of economics, if a corporation has no economic profit, all of its resources are being used to their fullest capacity, and its entire revenue is equal to its whole cost, it can nevertheless achieve a standard rate of return on investment. "Normal profit," often known as "zero economic profit," is the condition in which a firm is operating when its economic profit is equal to zero. When all resources are being used effectively, normal profit happens.
Profits are the surplus of overall income over the cost of the opportunity to produce the item. With no economic profits, a company is nevertheless making a reasonable or competitive return. Positive economic profits consequently signal that a company is outpacing the industry average in terms of earnings.
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