Final answer:
Children in middle childhood are more likely to focus on A) physical appearance, B) social skills, and C) academic achievements in their self-concepts. Hence, D) is correct.
Step-by-step explanation:
Children in middle childhood are more likely to focus on all of the above traits in their self-concepts. This includes physical appearance and abilities, social skills and friendships, and academic achievements and competence.
During this stage (ages 6-11), children compare themselves to their peers and begin to develop a sense of pride and accomplishment in various areas of their lives.
They become aware of their own personality traits and recognize the traits they would like to have.