Question

the creation of prohibition had the unintentional effect of a increasing the popularity of television and motion pictures. b causing increased popularity of radical groups such as the ku klux klan. c causing people to turn to harder drugs such as heroin and cocaine. d creating a network of organized crime that illegally supplied people with alcohol.

Explanation:

• Option A: Television and motion pictures' popularity was not linked to Prohibition.
• Option B: The KKK's popularity rise was more related to other factors (e.g., post - war, racial tensions) not Prohibition.
• Option C: Prohibition was about alcohol, not a direct cause for turning to harder drugs.
• Option D: Prohibition made alcohol illegal, so organized crime groups formed to supply alcohol illegally, which is a well - known unintended effect of Prohibition.

Answer:

D. creating a network of organized crime that illegally supplied people with alcohol.