This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Impoant Motor Milestones, Subject name: Pediatrics
At what age the child begins to do the following? 
Select and explain. 
A. 2 weeks, B. 4 weeks, C. 8 weeks, D. 12 weeks
D: 12 weeks
Answer: D: 12 weeks 
Explanation: By 12 weeks, the child can lift his head above the horizontal plane in prone position.