Answer:
C) 7 years old
Step-by-step explanation:
Changes in children's reasoning about friendships are due to changes in their ability to take others' perspectives into account. In that respect, at approximately nine years of age children tend to define their friends, take others' needs into account, reduce loneliness and share feelings. In fact, younger children's concepts of friendship are more concrete, such living nearby and playing certain games and with certain toys.