<prompt> Which of the following can be done by 15 months childWalks aloneTransfers object hand to handBuilds tower of 2 cubesAll of the above  <response>: 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: Nelsons 20th edition, page 66. 