Carbon Monoxide hazard description.

Carbon Monoxide hazard description.

• A. Can be deadly, it replaces oxygen in the bloodstream
• B. Causes skin irritation
• C. Increases oxygen in the blood
• D. No effect

Answer: (A)

Carbon monoxide disrupts how the blood carries oxygen. It binds to hemoglobin more readily than oxygen, forming carboxyhemoglobin, which means less oxygen is delivered to the body's tissues. That oxygen shortfall can quickly become life-threatening, especially in enclosed spaces where CO can build up. So describing CO as potentially deadly because it replaces oxygen in the bloodstream captures the main hazard. It doesn’t cause skin irritation, and it does not increase oxygen in the blood; those statements don’t reflect how CO affects the body.

Carbon monoxide disrupts how the blood carries oxygen. It binds to hemoglobin more readily than oxygen, forming carboxyhemoglobin, which means less oxygen is delivered to the body's tissues. That oxygen shortfall can quickly become life-threatening, especially in enclosed spaces where CO can build up. So describing CO as potentially deadly because it replaces oxygen in the bloodstream captures the main hazard. It doesn’t cause skin irritation, and it does not increase oxygen in the blood; those statements don’t reflect how CO affects the body.