___ is a symptom of CO poisoning.

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Multiple Choice

___ is a symptom of CO poisoning.

Explanation:
Carbon monoxide poisoning reduces the blood’s ability to carry oxygen because CO binds to hemoglobin, forming carboxyhemoglobin and depriving tissues of oxygen. This leads to a mix of symptoms that can appear together. Classic early signs include headache, dizziness, and nausea, so the option that lists all of these is the best choice. If exposure is suspected, seek fresh air and medical help promptly.

Carbon monoxide poisoning reduces the blood’s ability to carry oxygen because CO binds to hemoglobin, forming carboxyhemoglobin and depriving tissues of oxygen. This leads to a mix of symptoms that can appear together. Classic early signs include headache, dizziness, and nausea, so the option that lists all of these is the best choice. If exposure is suspected, seek fresh air and medical help promptly.

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