Final answer:
Piaget's sensorimotor stage focuses on children's limited mental representations and understanding of object permanence.
Explanation:
According to Piaget, during the sensorimotor stage (birth-2 years old), children's thinking is largely based on their perceptions and physical interactions with the world. Their mental representations are very limited during this stage. One of Piaget's famous tasks to demonstrate this stage is the object permanence task, where infants below 9 months do not understand that objects continue to exist even when out of sight.
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