Passage Summary: A politician wants to tax smokers to pay for a health program because they are unhealthy; a smoker argues that people who eat junk food are also unhealthy, but it would be crazy to tax them, implying the politician's plan is unfair.

Conclusion: The government should fund a new health campaign by increasing taxes on cigarettes because smokers' habits create health costs.

Reasoning: Since smokers engage in unhealthful habits that lead to serious medical issues, it is fair that they should be the ones to pay for a campaign promoting health awareness.

Analysis: To identify the point at issue, we apply the 'Agree/Disagree' test to the central claim. The politician explicitly argues that it is 'only reasonable' to tax smokers based on the health costs of their habits. The smoker counters by describing a similar situation—taxing high-fat food buyers—as 'manifestly unreasonable,' suggesting they disagree on the fundamental fairness of the politician's principle. Look for an answer choice that captures this disagreement over whether it is appropriate to single out one group for taxation based on the health consequences of their behavior.