Answer
a. a quantity that is too low and a price that is too
high.
Work Step by Step
A monopoly prices its items more than the marginal cost of producing these items in order to boost profits. Because of this, some customers value these items more than their marginal cost but less then the price they need to pay for them. So, they don't buy them and this causes losses in society.
Because the price is too high, the quantity demanded will be too low, because every increase in price leads to a reduction in quantity demanded.
