Final answer:
The digestive system helps the muscular system by absorbing nutrients necessary for muscle function. Nutrients such as proteins, fats, and carbohydrates, along with vitamins and minerals, are absorbed and transported to the muscles to provide energy, growth, and repair. So the correct option is A.
Step-by-step explanation:
The digestive system helps the muscular system by absorbing the nutrients that are necessary for the functioning of the muscles. When we eat, our digestive system breaks down food and releases nutrients. These nutrients are then absorbed into the bloodstream through the vessels lining the small intestine. The absorbed nutrients include proteins, carbohydrates, fats, vitamins, and minerals, which are vital for energy, muscle growth, and repair.
Therefore, the correct answer to the question is A. The digestive system absorbs the nutrients necessary for the functioning of the muscular system.
The cardiovascular system plays a pivotal role as well, supplying the digestive organs with oxygen and processed nutrients and then transporting these nutrients to the muscles via the bloodstream. However, the digestive system itself does not deliver blood or exchange gases; these functions are the primary responsibility of the cardiovascular and respiratory systems, respectively. Also, the digestive system does not provide structural support to the muscular system; this is a function of the skeletal system.