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 milestones of a 3-year-old child are considered delayed if he is unable to: 
Select and explain. 
A. Hop on 1 foot, B. Use spoon effectively, C. Copy a square, D. Reliably catch a ball
B: Use spoon effectively
Answer: B: Use spoon effectively 
Explanation: b. Use spoon effectively(Ref: Nelson's 20/e p 75)Hop on 1 foot, copying a square & catching a ball reliably, comes at 48 m (4 yrs)A child is able to feed self at 18 months, but handles spoon effectively at 24 months (2 yrs)