. Like Amalia, most infants show a range of emotions that become increasingly differentiated with age. At about 2-3 months of age, they begin to . show a spontaneous social smile show embarrassment express pride when they achieve a goal express disgust

The correct answer is: Show a spontaneous social smile.

Explanation:

Babies contrary to old popular belief have very deep and complex emotional worlds. They can experience a wide variety of emotions and feelings from the moment they are born. The feel emotions such as happiness and distress most of the time in response to their environment due to their developing perceptions.

At around 2-3 months of age, babies indeed develop a social smile in response to pleasant stimulus found in their environment and at four months of age they are able to laugh.

The correct answer then is: Show a spontaneous social smile.

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