Answer:
The correct answer is mental hygiene.
Explanation:
Mental hygiene is well being or preventing mental illness. Mental hygiene is the ability to functioning at a level that is balanced at a satisfactory level on emotional and behavioral adjustment.
Mental hygiene is the science that helps in preventing mental illness by developing various programs. Dorthea Dix worked on mental hygiene to treating people with mental illness.
Thus, the correct answer is - mental hygiene.
