Answer: Personality
Step-by-step explanation:
Personality is the trait that helps in generating distinctive character of any individual. Personality consist of qualities,temperament, skills, characteristics and other features.This helps in carrying out function of responding, feeling, thinking,expression etc.
Accordion to the question,the trait that defines and shows response of person towards any particular situation or surrounding is personality of that person. Person will express himself/herself as per their personality characteristic.