The same loving caregiver. Changing caregivers can confuse your baby. Find a good one and don't change. Trained adults who can plan activities that teach children. A clean, safe place.
Good caregivers read, sing and talk with children.
Good caregivers teach thinking by reading, talking, and playing with children and giving them a chance to try new things. Children need to climb, play, splash, and run safely and not be stuck in a playpen all day. Babies need regular daily routines. They need to feel loved. Variety of positive, age-appropriate experiences.