<prompt> Parboiling is done for-Milling processPolishing of ricePreservation of nutritionStorage of rice  <response>: Ans. is c i.e., Preservation of nutrition o Parboiling partial cooking in steam is technique of preserving the nutritive value of rice. In parboiling, greater parts of vitamins and minerals present in outer layer of the rice grain are driven into the deepar layers. With subsequent milling the nutrient are not removed. 