Final answer:
The Harrison Narcotics Tax Act (option B) is the legislation that regulated and taxed opiates and coca products. It required registration and taxes for those involved in their distribution, aiming to control the narcotics market and discourage non-medical use.
Step-by-step explanation:
The act that regulated and taxed the production, importation, and distribution of opiates and coca products is the Harrison Narcotics Tax Act. This legislation, passed in 1914, effectively marked the beginning of illegal drugs in the United States. It required those involved in the manufacture, importation, and distribution of opium and coca products to register with the Treasury Department and pay taxes on these substances. The purpose of the act was to control the narcotics market in the United States and discourage the non-medical use of these drugs.
The Pure Food and Drug Act of 1906 also played a role in regulating the contents of foods and medicines, requiring labeling of ingredients which would later impact narcotics regulation. However, it was the Harrison Act that specifically tackled the issues related to opiates and cocaine by imposing strict regulations and taxes.