<prompt> The milestones of a 3-year-old child are considered delayed if he is unable to:Hop on 1 footUse spoon effectivelyCopy a squareReliably catch a ball  <response>: b. Use spoon effectivelyRef: Nelsons 20e p 75Hop on 1 foot, copying a square catching a ball reliably, comes at 48 m 4 yrsA child is able to feed self at 18 months, but handles spoon effectively at 24 months 2 yrs 