I’m not exactly sure, but I’m thinking it may be A . I just learned about this unit previously .
My best answer would be C I hoped I helped sry if you get it wrong
Answer: Tissue that carries messages throughout our bodies is called nerves. Nerves conduct electrical impulses between the brain and brain stem to all parts
A)amino acid is the correct answer
The answer is D, serving as a primary source of energy for the body.
