In clinical diagnosis, what does a "severe and pervasive pattern" typically refer to?
A) A temporary condition that affects an individual’s mood or behavior for a short period.
B) A chronic and widespread set of symptoms or behaviors that significantly impair an individual’s functioning across various aspects of life.
C) A pattern of symptoms that only occurs during specific life events or stressors.
D) A condition that affects only a small, specific part of the body or mind.