Question

what is \asphyxia\ caused by?
a) infection of the alveoli
b) carbon dioxide buildup
c) lack of oxygen
d) excessive oxygen

Explanation:

Asphyxia is a condition where the body is deprived of oxygen. Infection of alveoli is related to pneumonia - like conditions, carbon - dioxide buildup is hypercapnia, and excessive oxygen is not related to asphyxia. Lack of oxygen causes asphyxia.

Answer:

C. Lack of oxygen