Final answer:
The term 'ego boundary' refers to the beginning of the self-concept, and 'self-efficacy' is the term for one's confidence in their own abilities. Both of these concepts are foundational in understanding the self and are developed through interactions and experiences.
Step-by-step explanation:
The beginning of the self-concept, or the recognition that individuals are separate entities, is also known as ego boundary (option b). The term self-concept refers to an understanding of who we are, and it develops through social interactions, as discussed by theorists such as Mead and Rogers. In the context of child development, a positive self-concept is crucial for healthy development, contributing to confidence, better performance in school, and willingness to try new activities.
Your level of confidence in your own abilities is known as self-efficacy (option a). This is closely related to self-concept, wherein self-efficacy focuses on belief in one's abilities to handle specific tasks, whereas self-concept is a broader understanding of oneself.