Lilianne is beginning to develop a fear of strangers and will reach for her mother when she sees someone who is unfamiliar. It is likely that Lilianne has also just

A) mastered the principle of conservation.
B) overcome the limitation of egocentrism.
C) developed a sense of object permanence.
D) lost her sense of secure attachment.

Mastered Conservation

Understanding that properties such as mass, volume, and number remain the same despite changes in the form or appearance of objects.

Egocentrism

A cognitive characteristic where an individual has difficulty understanding that other people’s perspectives and viewpoints can be different from their own.

Secure Attachment

A type of emotional bond where individuals feel confident and trust their relationship partners, often stemming from consistent caregiving in early life.