Megan throws her toy ball outside of her crib because she wants her mother attention. Her mother picks up the ball and hand it to her. She does it again, expecting her mom to pick it up once more, This is an example of which Sub-stage of sensorimotor intelligence?

A. Sub-stage 1

B.Sub-stage 2

C.Sub-stage 3

D. Sub-stage4

E. Sub-stage 5

F.Sub-stage 6