system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
This milestone is achieved by a child at age of __________
assistant
The correct answer is  Follows moving object (180degrees) develops at 2 months Also at 2 months Smiles on social contact Listens to voice and coos Head sustained in a plane of the body on ventral suspension Ref : Nelson 20th edition pg no : 66