It’s between b and d. I would go with b based on the information below.
The four primary functions of carbohydrates in the body are to provide energy, store energy, build macromolecules, and spare protein and fat for other uses. Simple carbohydrates are quick energy sources, but they do not usually supply any other nutrients or fiber. One of the most important functions of carbohydrates is to form a structure called the glycocalyx. This is a coat around the cell.
The urinary system consists of the kidneys, the ureters, the urinary bladder, and the urethra.
Cytoplasmic uses actin and myosin for the movement of the cytosol which causes the organelles to move inside the cell.
