Final answer:
Babies do not use their tongues when they babble, cry, coo or imitate words.
Step-by-step explanation:
Infants do not use their tongues when they babble, cry, coo, or imitate words. During the babbling stage, which usually occurs after the first few months of life, babies produce single syllables that are repeated over and over.
They are not trying to communicate and are just as likely to babble when they are alone as when they are with their caregivers. It is important to note that babbling can also be observed in the gestures of babies raised in environments where sign language is used.