When 1-year-old Andrea tries to talk,her mother talks back;when she smiles,her mother smiles in return.These maternal reactions are most relevant to Andrea's development of

A) a secure attachment.
B) conservation.
C) egocentrism.
D) object permanence.

Secure Attachment

A healthy attachment style established in early life, characterized by trust, a sense of security, and a positive view of self and others.

Object Permanence

Acknowledging that objects still endure even when they're beyond our sensory detection like sight or hearing.

Conservation

A cognitive ability, described by Piaget, to understand that certain properties of objects remain the same despite changes in their form or appearance.