To hide the favourite toy of Justin underneath a couch cushion and then to see whether he tries to find it and look for that toy.
Answer: Option B
Step-by-step explanation:
Piaget was one of the most famous psychologists. He had developed many theories. One of those was about the cognitive development. In the sensorimotor stage of this cognitive development, the child is in the first stage of development and it begins when the child is born and this stage lasts till the age of two. In this stage, the child learns about the world by using their senses and learns to interact with the surroundings with the senses.