There is nothing to choose from?
I don’t know so I can’t help you
The exercise I would be selecting is running, running helps improve lactic acid by training the body to use it as a fuel and, it can help improve aerobic energy systems by enhancing the muscles ability to be to use available oxygen to produce atp. Hope this helps:)
The answer to this question would be <span>insulation.
Myelin is a cell that will envelop a neuron axon so it will have some insulation in many parts of their membrane. This insulation will help membrane potential to travel faster. Fast neuron fiber always be the one with sheath. Losing myelin will cause the signal transmission is impaired.</span>
I'm not quite sure what you mean by the 3rd option, so I'd have to say either that or none of the above