题目选项分析

The lobbyists argued that because there is no statistical evidence that breathing other people' s tobacco smoke increases the incidence of heart disease or lung cancer in healthy nonsmokers, legislation banning smoking in workplaces cannot be justified on health grounds.

Of the following, which is the best criticism of the argument reported above?

【选项】It fails to mention the roles played by diet, exercise, and heredity in the development of heart disease.