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Vehicle basics

Carbon monoxide emitted by a vehicle can cause the following in humans:

  1. increased heart rate
  2. digestive disorders
  3. sleep disorders
  4. changes in the central nervous systemCorrect answer!

Explanation

The correct answer is option 4 (changes in the central nervous system). This question assesses Basic mechanics; this alternative directly meets the conditions in the prompt and the road-safety rules. The other alternatives broaden, narrow, or depart from the stated conditions and therefore should not be selected. Under the current rule, the difficulty is 2 on a scale from 1 to 5.

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