In Which of the Following Scenarios Does the CHN Use

In which of the following scenarios does the CHN use secondary prevention to reduce environmental health risks?

A) Collecting blood specimens from preschool children to check for lead levels
B) Meeting with local government officials to request that the city clean up a contaminated vacant lot
C) Referring a child diagnosed with toxic lead levels to a neurologist
D) Teaching the parents of a 2-year-old about the dangers of lead-based paint in older homes