Depends on how fast he runs in a sitting. If he runs slow during the 20 minutes he isn't getting much done :D.
I believe it would be A because paresthesia a tingling sensation in the body... and that would be a symptom.
I believe it is the connective tissues
A large protein molecule responsible for facilitating biochemical reactions within the body. ... Chemical substances that are absorbed by the body through the process of digestion. nutrition. The proper supply of nutrients essential for growth, reproduction, repair, immunity, and energy.
D
<u>The forces are balanced so no motion occurs.</u>
There'll be no change in the state of an object if the forces are balanced.
