Final answer:
Infants, toddlers, and preschoolers go through significant developmental changes in various areas such as physical development, cognitive development, and psychosocial development.
Step-by-step explanation:
Infants, toddlers, and preschoolers go through significant developmental changes in various areas such as physical development, cognitive development, and psychosocial development. Infants develop motor skills, sensory abilities, and cognitive abilities during the first year of life. Toddlers experience growth in weight and height, and their physical, cognitive, and psychosocial development advances rapidly. Preschoolers show progress in cognitive abilities, understand basic time concepts, and develop a curious mind.