I believe the answer is B. Platelets
Answer:
United States relative to other high-income countries might be deficiencies in health services
Explanation:
One explanation for the health disadvantage of the United States relative to other high-income countries might be deficiencies in health services. Although the United States is renowned for its leadership in biomedical research, its cutting-edge medical technology, and its hospitals and specialists, problems with ensuring Americans’ access to the system and providing quality care have been a long-standing concern of policy makers and the public
Answer: your answer is A. The quality of air and water at places where people live,work, and go to school.
Explanation: environment is a where people live together.
The answer is Cardiorespiratory Fitness. Hope that helped :)