The process of respiration is concerned with
-
Intake of O2
-
Liberation of O2
-
Liberation of CO2
-
Liberation of energy
D
Correct answer
Explanation
Respiration is fundamentally about energy liberation - the process where cells use oxygen to break down glucose and release ATP energy. While oxygen intake and CO2 release occur during respiration, they are means to the end of energy production. Options A, B, and C describe only parts of the process.