<prompt> Road -to health cha was given by-John SnowDavid MorleyKochHenrey Ducant  <response>: Ans. is b i.e., David morley Growth cha o Also known as road-to-health cha. It was first designed by David morley. o It is a visible display of the childs physical growth and development. o It is designed primarily for the longitudinal follow-up growth monitoring of child. o Mostly weight for age is taken into consideration height is not taken into consideration. o This is because weight is the most sensitive measure of growth and any detion from normal can be detected easily by comparison with reference curves. A child can lose weight but not height. The growth cha offers a simple and inexpensive way of monitoring weight gain and infact child health oveime. 