The responses for a question on a scale were 12, 13, 16, and 19. What is the mean?

Young Pemba is being observed as he plays in a room with his mother. Pemba frequently plays with the toys in the room, but occasionally looks back at his mother to make sure she is there

After a quick smile is exchanged between mother and child, Pemba goes back to playing with the toys. When Pemba's mother leaves the room, he becomes moderately upset, but is easily soothed when she returns. Which type of attachment does Pemba seem to have with his mother? A) Loving B) Secure C) Interdependent D) Developmental

The functioning of blood vessels, glands, and internal organs is regulated by the:

a. autonomic nervous system. b. somatic nervous system. c. hippocampus. d. lymphatic system