Final answer:
The central idea of the ‘Commonlit Mirror Stage’ text is the exploration of self-identity and its development in early childhood, best summarized by Option A.
Step-by-step explanation:
The central idea of the text ‘Commonlit Mirror Stage’ revolves around the development of self-identity in early childhood. This is evident through the exploration of the mirror test and how children recognize themselves in a mirror, developing self-awareness around the age of 18 months. Psychological experiments such as the one with a red dot of paint on children's noses demonstrate this milestone in self-concept development, where toddlers begin to understand that the reflection in the mirror is actually themselves, not another baby.
This understanding of self is a crucial aspect of childhood development and can be related to various theories of psychology and personal identity. Given the provided reference and options, the best summary that captures the central idea discussed in the text would be: Option A, which states: The text explores the concept of self-identity and its development in early childhood.