Answer:
a. Physical appearance
Step-by-step explanation:
The Physical appearance of a person is as a result of the genetic make up of the individual. This factor barely has an influence on an individual’s core belief system.
Religious background is a key element of individual’s core belief system as it forms the basis of one's belief about God, life, fate and destiny.
Family upbringing forms the basis of one's belief as the individual grows. The influence of the members of a family forms a part of the individual's core belief.
Life experiences as well forms a key part of our belief system and the same goes for personality.