What Would You Say Is the Biggest Threat to the General

What would you say is the biggest threat to the general welfare of U.S. citizens?

A) Cocaine, because of the violent crime and corruption associated with the large drug cartels and governments of the countries in which cocaine is produced
B) Alcohol, because half of all people committing violent crimes are under its influence at the time of the crime
C) Marijuana, because it is the most used illegal drug
D) Tobacco, because it kills more people every year than all other drugs combined and yet is subsidized by the government