Final answer:
Chemotherapy treatments are spaced out to minimize side effects and allow healthy cells to recover.
Step-by-step explanation:
Chemotherapy treatments are spaced out to minimize side effects (b). Chemotherapy drugs work by interfering with the division of rapidly dividing cells, including both cancer cells and healthy cells. The side effects of chemotherapy are seen in bodily systems that have a high turnover of cells, such as the skin, hair, gastrointestinal tract, and bone marrow. By spacing out the treatments, it allows the healthy cells to recover and reduces the intensity of side effects.