This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Road - to health cha was given by? 
Select and explain. 
A. John Snow, B. David Morley, C. Koch, D. Henrey Ducant
B: David Morley
Answer: B: David Morley 
Explanation: Ans. is 'b' i.e., David morley Growth cha Also known as "road-to-health" cha. It was first designed by David morley. It is a visible display of the child's physical growth and development. It is designed primarily for the longitudinal follow-up (growth monitoring) of child. Mostly weight for age is taken into consideration (height is not taken into consideration). 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.