<prompt> Who has coined and developed the concept Theory of web of causation?Mc Mohan and PughPettenkofferJohn snowLouis Pasteur  <response>: The web of causation theory was given by MC Mohan and Pugh. It is based upon the epidemiological triad of: Agent Host Environment Ref: Parks Textbook of Preventive and Social Medicine, 20 th edition, Page 32. 