ANSWER:
B. to control outbreaks of diseases
Step-by-step explanation:
One of the functions of public health policy is to control outbreaks of diseases.This can only be possible by taking these steps such as Investigation of the outbreak,necessary preparations ,verify the presence of an outbreak, identify different cases,then conduct descriptive epidemiology,develop hypotheses and at last evaluate Hypotheses.By following such steps the outbreak of diseases can be controlled.