Self-concept refers to:

Self-concept is a crucial aspect of an individual's identity, encompassing how a person perceives and evaluates themselves. This internal view includes feelings, beliefs, and thoughts about one's own abilities, personality, and overall worth. A positive self-concept can lead to higher self-esteem and better emotional well-being, while a negative self-concept may contribute to challenges in various areas of life, including social interactions and academic performance.

The other options focus on external factors and interpersonal dynamics rather than the intrinsic self-perception that defines self-concept. Relationships with others, academic success, and social skills are all influenced by a person's self-concept but do not encapsulate what self-concept itself is. Understanding self-concept is vital for guiding children's development, as it shapes how they interact with the world around them.