This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Which of the following can be done by 15 months child \nSelect and explain. \nA. Walks alone, B. Transfers object hand to hand, C. Builds tower of 2 cubes, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: A child walks without suppo 13 months onwards Transfers objects at 7 months Builds a tower of 2 cubes at 15 months Speaks 10 words with meaning at 18 months Speaks 2 word sentences at 2 years. Ref: Nelson's 20th edition, page 66.", 'role': 'assistant'}]