What is the defined period of infancy?

The defined period of infancy is recognized as the first year of life. This stage is characterized by rapid growth and development, where significant physical and cognitive milestones are achieved. During this time, infants undergo crucial changes, including the development of sensory abilities, motor skills, and social engagement. Understanding this crucial period helps healthcare professionals, including occupational therapists, tailor their interventions and support to meet the developmental needs of infants effectively.

While the other options include various stages of early child development, they do not accurately delineate the specific timeframe known as infancy. The period from birth until three years encompasses both infancy and toddlerhood, and the first two years of life includes the infancy stage but extends beyond it.