Answer:
A faulty pattern of thinking, feeling, or acting
Explanation:
A mental disturbance may be a designation often used interchangeably with the terms mental disorder, psychiatric disorder, or mental disease. Mental disorder is a syndrome characterised by a clinically significant disturbance in a person's cognitive, emotion regulation, or behaviour that reflects a dysfunction within the psychological, biological, or developmental process underlying mental functioning. Mental disorders are usually related to significant distress in social, occupational, or other important activities.
B. An increase in knowledge as well as written books
Mountain formation like this guy said