Final answer:
The preoperational stage is Piaget's stage of development for 3-6 years old. Children in this stage can use symbols but have an egocentric perspective.
Step-by-step explanation:
Piaget's stage of development for 3-6 years old is the preoperational stage. In this stage, children can use symbols to represent words, images, and ideas. However, they cannot understand adult logic or mentally manipulate information. They also have an egocentric perspective, meaning they don't have an awareness of others' points of view.