Final answer:
According to Erikson's theory of psychosocial development, the main task of the adolescent is to develop autonomy and feel competent. In school, children learn about their own and others' unique capacities, which helps them develop a sense of diversity.
Step-by-step explanation:
Based on Erikson's theory of psychosocial development, the main task of the adolescent is to develop autonomy and feel competent. During this stage, children compare themselves to their peers in order to assess their own abilities and capacities. In school, children learn about their own and others' unique capacities, which helps them develop a sense of diversity rather than competition or uniformity.