This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
STEPS done for 
Select and explain. 
A. Surveillance of incidence of non-communicable disease, B. Surveillance of risk factors of non-communicable disease, C. Surveillance of evaluation of treatment of noncommunicable disease, D. Surveillance of mortality from non-communicable disease
B: Surveillance of risk factors of non-communicable disease
Answer: B: Surveillance of risk factors of non-communicable disease 
Explanation: STEP wise approach to surveillance (STEPS): Is a simple, standardized method by WHO for surveillance
Is of two types:

STEP-wise approach to chronic disease risk factor surveillance
STEP-wise approach to Stroke surveillance