What happens to the demand curve when consumer preferences shift favorably towards a good?

When consumer preferences shift favorably towards a good, the demand for that good increases. This means that consumers are willing to buy more of the good at any given price. As a result, the demand curve shifts to the right.

This rightward shift indicates an increase in quantity demanded across various price levels, reflecting the higher desirability of the good due to the change in consumer preferences. In economic terms, this reflects a higher willingness to pay for the same quantity or a willingness to purchase more of the good at the current prices.

The other choices do not accurately represent what happens to the demand. A leftward shift would indicate a decrease in demand, remaining unchanged implies no change in consumer behavior, and becoming horizontal would suggest perfectly elastic demand, which is not the scenario described when preferences improve. Thus, the demand curve indeed shifts to the right in response to a favorable shift in consumer preferences.