Answer:
B). Aptitude.
Step-by-step explanation:
Psychologists have revealed that our personality is highly shaped and affected by the environmental factors as it molds the beliefs, attitude, value system of an individual's personality. Numerous environmental factors influence the personality of an individual and as per the question, it includes all the other three except 'aptitude'. As 'aptitude' is something that is entirely natural and cannot be altered by environmental changes. It is referred to as the 'natural potential to acquire knowledge or skill'. Thus, option B is the correct answer.