Question

multiple choice question
what is hypercapnia?

excess of carbon monoxide
an excess of carbon dioxide in the blood
increase in oxygen
a loss of carbon dioxide in the blood

Explanation:

Hypercapnia is defined as an excess of carbon dioxide in the blood. The first option refers to carbon monoxide excess (not carbon dioxide), the third is about oxygen increase (unrelated), and the fourth is a loss of carbon dioxide (opposite of hypercapnia). So the correct option is the one stating an excess of carbon dioxide in the blood.

Answer:

B. An excess of carbon dioxide in the blood (assuming the options are labeled A, B, C, D with the second option as B; if labels differ, adjust to the correct identifier with the text "An excess of carbon dioxide in the blood")