Final answer:
The size of preschoolers varies due to individual growth patterns, which is true. Preschoolers typically gain weight and height each year, and they also make strides in cognitive and motor skill development. Cultural factors can influence developmental milestones, such as the age of starting formal education.
Step-by-step explanation:
The statement that the size of preschoolers varies due to a law that growth patterns proceed at an individual rate and time for each child is true. It is widely recognized that preschool children go through physical, cognitive, and psychosocial development at individual paces. Growth during early childhood, including the preschool years, is slower compared to infancy but is still substantial with gains in height and weight occurring yearly. Preschool-age children usually experience steady progress in cognitive development and demonstrate emerging motor skills, such as the ability to ride a tricycle.
Not all children reach developmental milestones at the same time due to a variety of biological and environmental factors. Furthermore, cultural variations can influence the timing of certain social milestones, such as the age at which formal schooling begins, which differs across different global regions.