An example of secondary prevention in action is:

A) initiating treatment for a diagnosed mental health condition.
B) distributing educational materials that describe modifiable risk factors for mental illness.
C) providing routine mental health screenings, followed by immediate intervention as needed.
D) advocating for federal legislation that protects individuals' mental health in the workplace.

Secondary prevention aims to identify and address a disease or condition early in its manifestation to halt or slow its progression. Providing routine mental health screenings followed by immediate intervention as needed is an example of secondary prevention because it involves identifying those who are beginning to show signs of mental health issues and intervening quickly to prevent these conditions from worsening.