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GATE 2024 IN – Question 8

General Aptitude · Analytical Aptitude: Logical Reasoning and Deduction · 2 marks · Multiple choice

The plot shows the relationship between cardiovascular-disease mortality risk and the number of steps a person walks per day. Based on these data, which option is true?

Diagram for GATE 2024 IN question 8
  1. The risk reduction on increasing the steps/day from 0 to 10000 is less than the risk reduction on increasing the steps/day from 10000 to 20000.
  2. The risk reduction on increasing the steps/day from 0 to 5000 is less than the risk reduction on increasing the steps/day from 15000 to 20000.
  3. For any 5000 increment in steps/day the largest risk reduction occurs on going from 0 to 5000.
  4. For any 5000 increment in steps/day the largest risk reduction occurs on going from 15000 to 20000.

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Correct answer: (C) For any 5000 increment in steps/day the largest risk reduction occurs on going from 0 to 5000.

Explanation

The curve decreases most steeply near zero steps and progressively flattens.

Consequently its vertical drop over the first 5000-step interval exceeds that over any later equal interval.

This is exactly **C**; the graph supports an association, without requiring a causal claim.