Final answer:
Developmental checklists are used with A. Infants and toddlers to track their growth and development during the critical periods of infancy (0-1 years) and toddlerhood (1-3 years). These tools monitor milestones in various developmental stages, which are not typically used for senior citizens or teenagers.
Step-by-step explanation:
Developmental checklists are most commonly associated with A. Infants and toddlers. These checklists are tools that help track the growth and development of children in this age range, which encompasses children ages 0 to 2.5 years.
Infancy is the period from birth to age one and is a time of rapid physical and cognitive development, where infants typically experience significant changes in size and gain abilities like grasping objects and recognizing familiar faces. A toddler, on the other hand, represents children from 1 to 3 years old, who begin to walk, talk, and develop a sense of independence.
As children pass through various developmental stages, parents and caregivers use developmental checklists to monitor milestones in physical, cognitive, and psychosocial development. For adolescents, ages 13-20, significant changes include puberty, the development of a more complex sense of identity, and increased independence. Unlike with infants and toddlers, developmental checklists are not commonly used for senior citizens or teenagers in the same manner.