Question

appropriate first - aid measures for dealing with carbon monoxide poisoning should not include
getting brisk exercise.
getting fresh air.
seeking medical attention.
leaving the suspected environment.

Explanation:

When dealing with carbon monoxide poisoning, getting fresh air, seeking medical attention, and leaving the suspected environment are appropriate first - aid measures. However, getting brisk exercise is not. Carbon monoxide binds to hemoglobin in the blood, reducing the blood's ability to carry oxygen. Brisk exercise would increase the body's oxygen demand, which is not beneficial when the oxygen - carrying capacity of the blood is already compromised.

Answer:

getting brisk exercise.