Answer:
C. the ban on alcohol
Step-by-step explanation:
The 21st Amendment reversed the ban on alcohol, which was established by the 18th Amendment. The 18th Amendment, also known as the Prohibition Amendment, was passed in 1919 and prohibited the manufacture, sale, and transportation of intoxicating liquors in the United States. However, the Prohibition era led to widespread lawbreaking and organized crime, and ultimately failed to achieve its intended goals. In 1933, the 21st Amendment was passed, repealing the 18th Amendment and ending Prohibition. The 21st Amendment gave the power to regulate alcohol to the states, rather than the federal government, and allowed for the legal sale and consumption of alcohol under certain conditions.