Answer:
The correct option here is D) maintain the excess capacity.
Step-by-step explanation:
Excess capacity is a concept which tells the difference between the optimum output that a company wants to obtain and the actual output it obtains.
Under the monopolistic competition ( a market where there is imperfect competition ) , firms would want to maintain their excess capacity because here firms are not of optimum size ( even when earning profits ) , they don't have the enough incentive to make optimum output and even if they try doing , then it will cost them high marginal cost in the long run than in comparison to marginal revenue.