Which of the following statements describes a perfectly inelastic demand? A. I prefer taking the subway to work rather than driving because of high fuel prices. B. Alarge number of youngsters buy roses from Colombian rose-growers before Valentine's Day. C. The government is promoting generic drugs that are much cheaper. D. Walgreens does not find any change in the number of people buying chlorthalidone after a 7 percent rise in

The correct answer is D. Walgreens does not find any change in the number of people buying chlorthalidone after a 7 percent rise in price.<br /><br />Perfectly inelastic demand refers to a situation where the quantity demanded remains constant regardless of changes in price. This means that consumers are completely unresponsive to price changes and will continue to purchase the same amount of a good or service, regardless of its price.<br /><br />Option D describes a scenario where the number of people buying chlorthalidone remains unchanged even after a 7 percent increase in price. This indicates perfectly inelastic demand, as the quantity demanded is not affected by the price change.<br /><br />Options A, B, and C do not describe perfectly inelastic demand. Option A describes a preference-based decision, option B describes a seasonal demand for roses, and option C describes a promotion of generic drugs, none of which are related to perfectly inelastic demand.