The correct answer is (a) Yogendra Rana.
Yogendra Rana was a civilian who participated in the Indian Air Force launched operation to rescue the victims of Kedarnath flash floods of 2013. He was a porter who helped the IAF to carry supplies and equipment to the affected areas. He also helped to evacuate the injured and stranded people.
Yogesh Semwal, Harinder Rawat, and Prem Kumar were all Indian Air Force personnel who participated in the rescue operation. They were all pilots who flew helicopters to the affected areas and helped to evacuate the injured and stranded people.
The Kedarnath flash floods of 2013 were a series of flash floods and landslides that occurred in the Kedarnath valley in the Indian state of Uttarakhand. The floods were caused by heavy rains that fell in the region for several days. The floods caused widespread damage and loss of life. The Indian Air Force launched a rescue operation to help the victims of the floods. The operation was successful in evacuating thousands of people from the affected areas.