That long-term cigarette smoking can lead to health problems including cancer and lung disease is a scientifically well-established fact. Contrary to what many people seem to believe, however, it is not necessary to deny this fact in order to reject the view that tobacco companies should be held either morally or legally believes that candy eaters who get cavities should be able to sue candy manufacturers.
What this question is testing
Conclusion
The author wants to make a fairly subtle point: you can fully accept that smoking causes health problems and still reject the idea that tobacco companies are responsible for those problems.
Evidence
The candy analogy does the work. Candy causes cavities — undeniably. But nobody thinks candy makers should be sued by people with cavities. So "X causes Y" doesn't automatically mean "the maker of X should pay for Y."
Evaluate
The main conclusion is the equivalent: causation by smoking isn't enough by itself to justify holding tobacco companies responsible. You need more than causation; the candy case shows why.
Goal
Find the answer that captures: causation alone isn't enough to justify responsibility.
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