What is a personality trait

A)  a durable disposition to behave in a particular way in a variety of situations 
B)  a consistent pattern of behaviour that is entirely inflexible across situations 
C)  a flexible tendency to alter behaviour in a variety of situations 
D)  a durable disposition to behave in a particular way in a particular situation

A personality trait refers to a durable disposition or relatively stable and enduring aspect of an individual's character that predisposes them to act, think, or feel in a particular way across a variety of situations, contexts, and domains of life. These traits are relatively consistent over time and provide a basis for predicting and understanding an individual's behaviour. However, personality traits are not entirely inflexible or deterministic and may be modulated by situational factors and environmental cues, as well as individual motivations, goals, and values.