Answer:
a) depends on the others to function
Step-by-step explanation:
The body systems work together to maintain homeostasis and keep the body functioning properly. Each system has specific functions, but they all rely on each other to function properly. For example, the respiratory system is responsible for bringing oxygen to the body, but it depends on the circulatory system to transport the oxygen to the cells. Similarly, the digestive system breaks down food and absorbs nutrients, but it depends on the circulatory system to transport those nutrients to the cells. Therefore, it is not accurate to say that each body system performs a single task or is interchangeable. Additionally, the lungs are a part of the respiratory system, but they do not control all of the body systems.