These are persistent, recurring, involuntary thoughts.

A) compulsions
B) cognitive errors
C) obsessions
D) mood disorders

Obsessions are persistent, recurring, involuntary thoughts that can be distressing and interfere with daily life. Compulsions refer to repetitive behaviors or mental acts that a person feels driven to perform, often in response to obsessions. Cognitive errors are inaccurate thoughts or beliefs. Mood disorders refer to a group of mental illnesses characterized by significant changes in mood, such as depression or bipolar disorder.