<prompt> Radiotherapy works byCoagulation proteinsNecrosis of cellsIonization of tissuesNone of the above  <response>: Radiation therapy works by damaging the genetic material within cancer cells and limiting their ability to successfully reproduce. When these damaged cancer cells die, the body naturally eliminates them.Radiation therapy is based on the principle that ionizing radiation kills proliferating cellsRefer: Thayalans Basic Radiological Physics 1st edition, pg no: 206-207 