Final answer:
Administering 100 percent oxygen helps remove carbon monoxide and restore oxygen levels, while giving carbon dioxide does not displace carbon monoxide or restore oxygen levels.
Step-by-step explanation:
The administration of 100 percent oxygen saves a patient from carbon monoxide poisoning because it helps to remove the carbon monoxide from the body and replace it with oxygen. Carbon monoxide has a stronger affinity for hemoglobin in red blood cells compared to oxygen, which leads to a decrease in the oxygen-carrying capacity of the blood. Providing 100 percent oxygen helps to displace the carbon monoxide and restore oxygen levels in the body.
Giving carbon dioxide would not work to save a patient from carbon monoxide poisoning because carbon dioxide does not displace carbon monoxide in the same way oxygen does. Carbon dioxide is a waste product produced by the body's cells and is normally eliminated through respiration. Administering carbon dioxide would not effectively address the carbon monoxide poisoning and would not restore oxygen levels in the body.