Carla's parents have been pleased at what a happy baby she has been around any adult but start to become concerned when,at around eight months old,Carla begins to cry and become upset when others try to play with her.According to this example,Carla is most likely reacting this way due to

Question

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This situation describes stranger anxiety, which typically begins around 8 months of age. Infants at this stage may become upset or cry when encountering unfamiliar people or in situations where their caregivers are not present. This is a common and normal developmental milestone in infancy.

Carla's Parents Have Been Pleased at What a Happy Baby