Which factors caused the enforcement of the eighteenth amendment to break down? lack of government

Support among reformers in both middle class and the upper class

I'm pretty sure the answers are Lack of government agents to control illegal liquor-related crimes & people opposing prohibition who did little to help authorities

The correct answers are the following:

The 18th Amendment to the US Constitution was ratified in 1917, and it reflected the success of the temperance movement that had been very active during the previous decades. This amendment banned the production, sale and consumption of alcoholic beverages, acknowledging the negative consequences that consuming alcohol caused in human health and its role as a source of social issues such as poverty.

The 18th Amendment was repealed by the 21st Amendment, ratified in 1933. The main reason was the organized crime groups were enriching themselves smuggling with alcoholic beverages, and many related crimes started to harm the US society. Moreover, the population did not support the prohibition and they did not contribute at all to its proper functioning.

The correct answers are:

Hope it helps! ;)

Lack of government agents to control illegal liquor-related crimes & people opposing prohibition who did little to help authorities

The answer should be D  hope this helps

Well, the amendment made alcohol worse than it already was. People had to go to illegal ways to gain alcohol, making mobs popular. Alcohol poisoning was also extreme, and there are many other factors I cannot think of right now :P