This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Development examination should be further evaluated in child of 12 weeks if he – 
Select and explain. 
A. Does not vocalize, B. Does not babble, C. Does not change bright red ring from one hand to other even if given in hand, D. Does not hold head at 90°
A: Does not vocalize
Answer: A: Does not vocalize 
Explanation: Vocalization develops by 4 weeks.
Babbling develops by 7 months
A 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.