Final answer:
Infants typically develop the ability to transfer objects from one hand to the other at around six months of age, which is a significant cognitive milestone in their development.
Step-by-step explanation:
The ability of the infant to transfer an object from one hand to the other during play is typical of the six months of cognitive development. Around this age, infants typically begin to pick up objects and pass them from one hand to the other, develop better vision that's nearly as good as adult vision, and may start sitting up independently. Object permanence begins to develop during this sensorimotor stage, and infants can engage in vocal play with recognizable syllable patterns.
These abilities highlight significant cognitive milestones in an infant's life, reflecting an increase in cognitive skills such as problem-solving and understanding of the world around them.