According to social psychologist George Herbert Mead, how we see ourselves has a great deal to do with how others interact with us. Which of the following statements supports this idea?

a. Life-threatening medical problems are best handled by isolating the sick person.
b. Human beings do not have a strong need to belong to groups.
c. Children who have been isolated for long periods do not have a firm self-concept.
d. Relationships with professors, friends, colleagues, and caregivers are unimportant to a person's self-concept.

c. Children who have been isolated for long periods do not have a firm self-concept.