Answer:
The answer is D. Behavioral Risk Factor Surveillance System.
Step-by-step explanation:
This system of analysis makes use of telephone surveys from people aged 18 and above, so as to obtain information on issues such as chronic health conditions, health rish behaviors, existing preventive services. The major aim is to improve public health across the US since establishment in 1984. The Center for Disease Control and Prevention has being carrying out this activity and making data available to the public.