Critical reasoning — installing high chimneys in industries: Should industries install high chimneys, with one argument claiming reduced ground-level pollution and the other warning of increased upper-atmosphere pollution?

Verbal Reasoning Statement and Argument Difficulty: Medium
Choose an option
  • A
    Only argument I is strong
  • B
    Either I or II is strong
  • C
    Only argument II is strong
  • D
    Both I and II are strong
  • E
    Neither I nor II is strong

Answer

Correct Answer: Only argument I is strong

Explanation

Given data

  • Statement: Install high chimneys?
  • Argument I (Yes): Lowers pollutant concentration at ground level where people live/work.
  • Argument II (No): Increases pollution in the upper atmosphere.

Concept/Approach (exposure reduction vs. asserted externality)A strong argument must directly address human exposure and feasibility. High stacks disperse emissions and reduce ground-level concentrations; Argument II is speculative and not supported in the prompt with proportional risk analysis.

Step 1: Assess Argument IDirectly tied to the objective—reduce harmful exposure where it is highest (ground level).

Step 2: Assess Argument IIMentions a potential trade-off but provides no context on relative harm; the primary public-health goal remains ground-level reduction. Hence weak.

Final AnswerOnly argument I is strong.

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