What term refers to a relatively stable system that determines tendencies within an individual?

The term "personality" refers to a relatively stable system that encompasses an individual's patterns of thinking, feeling, and behaving. It represents the unique combination of characteristics that influence how a person interacts with the world and responds to various situations. Personality traits are consistent over time and across different situations, providing a framework within which an individual operates. This stability allows for predictions about how someone might react in particular circumstances, thus shaping their tendencies and behaviors.

In contrast, character typically denotes an individual's moral and ethical qualities and can be more fluid, influenced by external factors and life experiences. Attitude refers to an individual's predisposed response to certain situations or people, which can change based on context. Behavior is the observable action of an individual and can vary widely depending on numerous situational factors. Personality, being the underlying trait that informs these aspects, is what distinguishes this option as the most fitting for the question.