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
The most important function of sentinel surveillance is 
Select and explain. 
A. To determine the trend of disease in a population, B. To notify disease, C. To find the total amount of disease in a population, D. To plan effective control measures
C: To find the total amount of disease in a population
Answer: C: To find the total amount of disease in a population 
Explanation: Sentinel Surveillance

It estimates disease prevalence in a population.
It is a method for identifying the missing cases and thereby supplementing the notified cases.