If I recall correctly from my World History days, then it is D.
Answer:
social referencing
Explanation:
Aaron uses the emotional display in his mother's face to judge the situation and went to the mother to pick him since she was all smiling. Aaron is demonstrating social referencing. Infant start using this from when they are about 8 months old.
Many national and international organizations encourage people to form local branches. Some examples are the Red Cross or Red Crescent Society, Boy and Girl Scouts or Guides, and the 4-H youth agricultural movement. The work of many of those groups is directly related to health and community development.