Belle is excited when she receives a telephone call from her grandmother on her birthday. when belle's grandmother asks belle how old she is, belle holds up 3 fingers in front of the phone. belle's belief that because she can see her fingers, so can her grandmother, reflects the piagetian concept of

Egocentrism.

Explanation:

According to Swiss psychologist Jean Piaget (an unavoidable figure in the field of child psychology), egocentrism is a natural feature in children in their second childhood (between 3 and 6 years old). This is because at this age, children are unable to understand that other individuals have different beliefs, opinions, thoughts and realities than their own. An example of this can be seen in the question, where Belle is talking to her grandmother on the phone and when grandmother asks her age, Belle raises three fingers but does not speak her age on the phone. Belle does this because she has no idea her grandmother can't see what she's doing.

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