Multiple Choice
The task that this child is doing was developed by _____ to see if the child understands _____.
A) Jean Piaget; the principle of conservation
B) Renée Baillargeon; object permanence
C) Lev Vygotsky; the zone of proximal development
D) Mary Salter Ainsworth; secure attachment
Correct Answer:

Verified
Correct Answer:
Verified
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