What type of play is discussed in the "Building Babies' Brains Through Play" video, and why is it so important? Serve and return play; it allows interactions that shape baby's early brain development, which in turn affects the quality of future learning, behavior, physical, and mental health abilities Serve and return play; it gives the baby opportunities to problem solve, which stimulates neural arborization and lays the foundation for cognitive development O Hide and seek play; it allows for healthy interactions between the baby and the caregiver, which form the foundations of attachment and social learning O Hide and seek play; it gives the baby opportunities to problem solve, which stimulates neural arborization and lays the foundation for cognitive development