Well if you're referring to the human body, our cells make up a lot of everything we're made of. Muscles, organs, bones, blood, skin, etc. Biologically speaking, there's a lot to the human body besides organs. Sorry if this isn't very helpful.
Answer: A. fruits,vegetables, and grains provide the most fiber.
The psychologist is using a Token Economy because for doing something, you get a reward in exchange.
I think the answer is A. The body's ability to be efficient during movement. Hope this helped.
