Answer:
Your digestive system absorbs water and nutrients from the food you eat. Your circulatory system carries oxygen, water, and nutrients to cells throughout your body. Wastes from the cells are eliminated by your respiratory system, your excretory system, and your skin.
Explanation:
In some reactions, a single-reactant substrate is broken down into multiple products.
I think it is A
Hope my answer help you?!
Tell me of wrong or no?