What describes the disorders in Cluster B?

Cluster B personality disorders are characterized by dramatic, emotional, or erratic behaviors. This cluster includes disorders such as borderline personality disorder, narcissistic personality disorder, histrionic personality disorder, and antisocial personality disorder. Individuals with these disorders often exhibit challenges in regulating emotions and behaviors, leading to interpersonal difficulties and instability in relationships. The emphasis on drama and emotional expression is key to understanding the characteristics that define this cluster.

By contrast, the other options describe different clusters of personality disorders. For example, odd or eccentric behavior pertains to Cluster A disorders, fearful and avoidant behavior relates to Cluster C disorders, and obsessive and compulsive traits also belong to Cluster C. Therefore, the correct answer focuses directly on the essential features of Cluster B personality disorders.