Which best describes the effect exercise has on mental performance?

A. Exercise causes muscles to fatigue, which allows the brain to absorb lactic acid and improve mental focus.
B. Exercise decreases calcium absorption, which helps improve spatial reasoning.
C. Exercise requires blood to transfer from the brain to support the heart, causing decreased serotonin levels.
D. Exercise increases oxygen to the brain, which improves cognition.



Answer :

Final answer:

Exercise boosts cognitive function through increased oxygen delivery and blood flow to the brain, promoting neurotransmitter levels for enhanced mental focus and memory retention.


Explanation:

Exercise increases oxygen to the brain, which improves cognition by enhancing memory retention, information processing, and overall brain function. It also increases blood flow and oxygen availability to the brain, promoting the growth of new brain cells and neuronal pathways. Furthermore, exercise increases neurotransmitters like serotonin, leading to improved mental focus and cognitive performance.


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