This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth, Development, and Behavior, Subject name: Pediatrics
The developmental implication of developmental milestone uncovers toys after seeing it hidden is: 
Select and explain. 
A. Symbolic thought, B. Beginning of labelling, C. Object permanence, D. Self-discovery
C: Object permanence
Answer: C: Object permanence 
Explanation: c. Object permanence(Ref: Nelson's 20/e p 66)MilestoneStares at own handUncovers toy (after seeing it hidden)Pretend play with doll (e.g., gives doll bottle)Developmental implicationSelf-discoveryObject permanenceSymbolic thought