The government should implement a bill to prohibit the sale and drinking of alcoholic beverages on commuter trains. Recently, the government used its legal power to pass a law prohibiting smoking on commuter trains to protect the health of commuters. When drunken passengers get off the train, get into their cars and drive, the danger to the public is at least as great as that to nonsmoking passengers on trains forced to breathe cigarette smoke.
Which one of the followings does the author rely on to prove that drinking alcoholic beverages on commuter trains should be banned?
A comparison made between the effects of smoking and drinking alcoholic beverages