Aperson should consume more of something when its marginal a. cost equals its marginal benefit. b. benefit is still positive. c. cost exceeds its marginal benefit. d. benefit exceeds its marginal cost

The correct answer is letter "D": benefit exceeds its marginal cost.

Explanation:

The marginal cost represents the cost of acquiring one more unit of a given good or service. It allows recognizing what is the optimum level of consumption of a given product. If the benefit obtained from acquiring that additional good or service is higher than its marginal cost, then we could say it is worth it to get it.

answer; common market;