Answer: II. Citric acid cycle
Explanation:
Oxidation of pyruvate to acetyl-CoA does not generate energy and glycolysis generates only 2 ATP (2 ATP used and 4 ATP generated). On the contrary TCA generates as much 38 ATP.
The eyes detect changes in posture and inform the brain about the position of the body, so vision is very important for maintaining balance, in the optic disc nerve fibers leave the eye.