Respuesta :

The system that responds by delivering more oxygen to these cells is the circulatory system. The circulatory system, often referred to as the cardiovascular system, allows blood to circulate throughout the body to transport important nutrients to the body.

Answer:

The other person is correct, I just had the test and it showed it was correct, of course we already knew that the respiratory system played a process here, but one other system does to, and that's circulatory; In other words, circulatory and respiratory is the answer.

Explanation:

I just explained it, give the other person brainiest and have a good day.