<prompt> Development examination should be further evaluated in child of 12 weeks if heDoes not vocalizeDoes not babbleDoes not change bright red ring from one hand to other even if given in handDoes not hold head at 90  <response>: Vocalization develops by 4 weeks.Babbling develops by 7 monthsA child transfer the objects from one hand to another by 5-7 months.A child can hold head at 90 above horizontal plane in ventral suspension by 3 months Neck holding develops by 3 months. 