Answer:
A. depression is merely a mental disturbance.
Explanation:
Depression is a mental health disorder which is characterized by a persistent depressed mood or where there is loss of interest or no interest in activities, thereby causing a significant impairment in the life. It causes persistent sadness and activeness in out behavior. According to Steve, It is mood disorder and it can lead to physical and emotional problems in our lives. It is a severe mental disturbance.