Sam is likely in the preoperational stage of development, where children engage in pretend play and use symbols to represent objects.
Sam is likely in the preoperational stage of cognitive development, which typically ranges from 2 to 7 years old. In this stage, children can use symbols to represent words, images, and ideas, leading to engaging in activities such as pretend play. Sam's amusement in front of the mirror and not attempting to remove the hat despite laughing and giggling align with characteristics of the preoperational stage.
https://brainly.com/question/40416904