At what age do infants typically smile when spoken to?

Infants typically begin to smile in response to social interactions around the age of 4 to 6 weeks. By the time they reach 3 months, they can engage in social smiling more frequently when spoken to. This developmental milestone indicates that infants are starting to recognize familiar faces and respond with positive emotions. Social smiling is an important aspect of early communication, fostering emotional connections between the infant and their caregivers. Therefore, the right choice reflects the typical age range when infants first start to smile in response to verbal interaction. As they continue to develop, their social smiles become more refined and frequent, particularly evident by 4 to 6 months.