Carbon monoxide is a pollutant because it

The correct answer is A. Carbon monoxide reacts with haemoglobin.

Haemoglobin is a protein found in red blood cells that carries oxygen from the lungs to the rest of the body. When carbon monoxide enters the bloodstream, it binds to haemoglobin more easily than oxygen does. This means that less oxygen is available to the body’s tissues, which can lead to a number of health problems, including death.

The other options are incorrect because:

• Option B: Carbon monoxide does not react with oxygen.
• Option C: Carbon monoxide does not inhibit glycolysis. Glycolysis is a metabolic pathway that occurs in the cytoplasm of cells and is the first step in the breakdown of glucose to produce energy.
• Option D: Carbon monoxide does not inactivate the nervous system. The nervous system is a complex system of nerves that controls the body’s functions. Carbon monoxide can damage the nervous system, but it does not inactivate it.