Answer: A.
Explanation:
Im pretty sure its A. Balance. All of them are important but balance is the main thing you'd need to know.
Answer: Hope this helps: the 11 organ systems of the body are the integumentary, muscular, skeletal, nervous, circulatory, lymphatic, respiratory, endocrine, urinary/excretory, reproductive and digestive.
Cartilage is a rubber like tissue, protects the ends of long bones at the joints component of the rib cage, the ear, the nose and the bronchial tubes
Individual Health is focused on one patient, public health is focused on health of populations
