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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
Purposeful movement is staed at
assistant
The correct answer is  Palmer grasp goes at age of 4 monthTransfer object hand to hand 5.5 monthThe purposeful movement staed when there is an absence of Palmer group, so an above option best answer is 6 month(Refer: Nelson's Textbook of Pediatrics, SAE, 1st edition, pg no. 2798)