The correct option is D.
Marginal cost refers to the amount of money it cost a company to produce one more of a particular product while the marginal benefit refers to the benefit that is obtained as a result of producing that one extra product. Profit is maximized when the marginal cost equals the marginal benefits.
Its d. blank verse because its a verse without rhyme and uses an iambic pentameter
The mood which is established bu the setting, especially in the use of words such as deep, dusk, and black is <em>dark, gloomy, depressing, sad, scary, mysterious, </em>etc.