<prompt> The child rolls over by -3 months5 months7 months8 months  <response>: Ans. is b i.e., 5 months Age Milestone 3 Month Neck holding 5 Month Rolls over 6 Month Sit with support 8 Month Sit without support 9 Month Stand with support 12 Month Stand without support Walk with support 15 Month Walk alone, creep upstair 