Question 45

The Correct Answer is C. **Explanation for Option C (An inadequate supply of oxygen):** Asphyxia is a condition arising when the body is deprived of oxygen (or when the body cannot effectively utilize the oxygen it receives), leading to suffocation. The lack of adequate oxygen prevents the normal cellular respiration necessary for sustaining life, making "An inadequate supply of oxygen" the direct cause of asphyxia. **Explanation for Incorrect Options:** * **A) Improper caloric intake:** While improper caloric intake (malnutrition or overnutrition) can lead to various health problems, it does not directly cause asphyxia, which is specifically related to oxygen deprivation. * **B) Sleep deprivation:** Sleep deprivation impairs cognitive and physical function, but it does not directly cause the physiological condition of asphyxia (suffocation due to lack of oxygen). * **D) Too much oxygen:** Breathing excessive amounts of pure oxygen (hyperoxia) can lead to oxygen toxicity, which damages tissues, particularly the lungs and central nervous system. However, asphyxia is defined by the *lack* of oxygen, not an excess of it.