Answer: d
Explanation: I mean its either d or c and im 99 percent sure its d
Its mainly based on the drugs or medication
Sensory receptors convert information into impulses to be sent to the CNS.
We get tired after exercise because our muscle fibers get tired very quickly. This is due to the major source of energy for the muscle tissue, called adenosine triphosphate, or ATP. As the muscles make use of this supply of energy, they get tired and fatigue.
True, they have collected data from people with and without the flu virus
