Answer:
A. Central nervous system
Explanation:
Dopamine is a neurotransmitter which plays the role of sending signals to the part of the brain that is responsible for movement and coordination.
When the dopamine levels are low , the individual isn’t able to move well and loses coordination because of the little or absence of signals to the part of the brain that controls these aspects.
Supplies about 10 seconds worth of energy and is used for short bursts of exercise, such as a 100-meter sprint. This pathway doesn't require any oxygen to create ATP.
The provides rules and guidelines for the medical buisnesses. so A is your answer
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