Answer:
b. the total of an individual’s own beliefs about his/her physical characteristics, intelligence, aptitudes, and social skills.
Explanation:
Self concept is a key term in humanist theories , (Psychology) and understood as  "The individual's belief about himself or herself, including the person's attributes and who and what the self is". Generally speaking is how someone thinks about himself, usually accompained by a evaluation , good or bad, and a perception , with self  awareness .
The self concept is an active , dynamic , and changeable image, since social factors and changing situations tend to influence it, as just any social event affects individual self esteem.
Self concept includes: self image, self esteem, and the ideal self.
While the person's belief experience their sense of worth, unworthiness, choices and decisions will alter, but more broadly a self concept will be more based on habits, over large time laps, together with developed skills and the personality traits.
The ability of one to reflect upon its skills, traits and behaviour is thus the broader self.
