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Syllogism: Traffic Congestion

CAT 1999 Slot 1 · Data Interpretation & Logical Reasoning · Easy · Logical Reasoning

This is an easy Data Interpretation & Logical Reasoning question from the CAT 1999 Slot 1 paper. It tests Logical Reasoning. The full answer key and a step-by-step explanation are below — try it yourself first, then reveal the solution.

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Choose the option which indicates a valid argument, that is, where the third statement is a conclusion drawn from the preceding two statements.

A. Traffic congestion increases carbon monoxide in the environment. B. Increase in carbon monoxide is hazardous to health. C. Traffic congestion is hazardous to health. D. Some traffic congestion does not cause increased carbon monoxide. E. Some traffic congestion is not hazardous to health.

  1. A.

    CBA

  2. B.

    BDE

  3. C.

    CDE

  4. D.

    BAC

Answer

D

Explanation

BAC: Premise B: 'Increase in carbon monoxide is hazardous to health.' Premise A: 'Traffic congestion increases carbon monoxide...' Conclusion C: 'Traffic congestion is hazardous to health.' This forms a valid chain of reasoning.

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