carrying oxygen to the lungs sending signals from the brain to the spinal cord breaking down food into nutrients providing support for the body
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of the following is a function of the digestive system of the human body?
Possibilities:
- carrying oxygen to the lungs
- sending signals from the brain to the spinal cord
- breaking down food into nutrients
- providing support for the body

breaking down food into nutrients