<prompt> When a person comes in contact with other there is transfer of material from one to another. This is called:Locards principleQuetlets rulePettys principleNone of the above  <response>: Locards principle of exchange states that when two objects come into contact with each other, there is always some transfer of maternal from one to the other. Ref: Parikhs Textbook of Medical Jurisprudence Forensic Medicine and Toxicology, 6th Edition, Pages 5.35, 7.35 