Violet Is Riding on Her Tractor When She Sees She

Multiple Choice

Violet is riding on her tractor when she sees she is approaching a closed door. At first, she keeps on going and crashes into the door. Since she wants to get on the other side of the door, she gets off her tractor, looks at the door, and tries to push it. She sees that the door is not opening. She then decides to try the doorknob. According to Piaget, Violet is most likely in which substage of the sensorimotor period?

A) substage 3 (4 to 8 months)
B) substage 4 (8 to 12 months)
C) substage 5 (12 to 18 months)
D) substage 6 (18 to 24 months)