Three-Week-Old Juan Sticks Out His Tongue After Observing His Mother

Three-week-old Juan sticks out his tongue after observing his mother do the same. This may indicate

A) that babies can connect sensory input with corresponding motor responses.
B) that babies can self-regulate earlier than previously thought.
C) an infant's early awareness of unity with others.
D) that even young babies have a sense of personal agency.