Significant beneficial effects of smoking occur primarily in the area of mental health, and the habit originates in a search for contentment. The life expectancy of our people has increased greatly in recent years; it is possible that the relaxation and contentment and enjoyment produced by smoking has lengthened many lives. Smoking is beneficial.
Which of the following, if true, weaken the above conclusion?
(A) That cigarettes are a major health hazard cannot be traced to the willful act of any human or organization. -unrelated
(B) The government earns millions of dollars from the tobacco tax and tens of thousands of civilians are employed in the tobacco industry. -unrelated
(C) The evidence cited in the statement covers only one example of the effects of cigarette smoking.- correct; if the staement covers only one example, the good side of smoking( a seardch for contentment), meaning there are other effects of smoking. Those effects could be bad. smoking could be unbeneficial.
(D) No mention is made of possible harmful side effects of smoking. - if this is true, then it strengthen the conclusion
(E) No statistical evidence has proven a link between smoking and longevity - too weak
Therefore C