Answer:Primary reinforcers
explanation reinforcers that have innate reinforcing qualities.
active transport. The movement of ions or molecules across a cell membrane in the direction opposite that of diffusion, that is, from an area of lower concentration to one of higher concentration. Active transport requires the assistance of a type of protein called a carrier protein, using energy supplied by ATP.
Water. the only 4 macromolecules are nucleic acid, carbohydrate, lipids, and protein
Either B and D I believe I may be wrong..
I think it’s listed in largest to smallest order as is.