Answer:
trait
Step-by-step explanation:
Trait approach: In psychology, the trait approach is defined as the phenomenon that studies personality approach and focuses on the traits of a person that forms the basis of personality.
A trait is considered to be as a continuous process of an individual's thoughts and behavior that are considered to be as stable over a period.
Main principles: Big Five personality traits (agreeableness, neuroticism, openness to experience, extraversion, and conscientiousness).
In the question above, the online personality test most likely to use the trait approach to personality.