You are a clinician at a small, rural hospital. A mother brings her overweight 10-year-old son into the office for a routine check-up. Which of the following questions might you ask to gain insight into a potential population-level improvement?(A) "How available are fresh fruits and vegetables in the markets within your community?"(B) "Are there vending machines with sugar-sweetened beverages in your school?"(C) "What are the most easily available sources of information regarding nutrition and physical activity?"(D) All of the above