Question

The TEST IS TIMED PLEASE HURRY

1. The more often you are able to participate in cardio, the better it is for which organ(s)?

A. heart & lungs
B. brain
C.spleen
D. liver​

Answer 1

Answer: A) Heart and lungs

Step-by-step explanation:

The heart becomes more efficient with every beat as it pumps oxygen-carrying blood, the lungs more effective in taking in oxygen, and the muscles more equipped to use more oxygen.