Final answer:
During the sensorimotor stage of cognitive development, children collect data about their environment through their senses and motor actions.
Step-by-step explanation:
The sensorimotor stage is the first stage of Piaget's theory of cognitive development, which lasts from birth to about 2 years old.
During this stage, children collect data about their environment through their senses and motor actions. They explore objects with their hands, eyes, and mouths, and they manipulate objects to see how they respond.
For example, they might put objects in their mouths to see if they are edible, shake or bang objects to see if they make sounds, and reach for hidden objects to demonstrate their understanding of object permanence.