Boating Coach
On the waterQuestion 529 of 566

How does carbon monoxide harm the body?

  1. It burns the skin at once
  2. It makes the blood too thick
  3. It cuts off the oxygen supply to the body
  4. It stops the sense of hearing
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Correct answer: It cuts off the oxygen supply to the body

It enters through the lungs and can cause death in minutes.

Source: Safe Boating Guide (TP 511E, 2026), What You Should Know About Carbon Monoxide, page 67

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Questions last reviewed: 18 October 2026