Which Example Would Best Help Infants and Toddlers Transition from an Individual

Which example would best help infants and toddlers transition from an individual to a group schedule?

A) Larry has three caregivers when he is two years old.
B) Jessica has the same caregiver from infancy to age three.
C) Dmitri has one caregiver from infancy through age two and another at age three.
D) Sophia has two caregivers during infancy and two others when she is a toddler.