Answer:
O d. He was the leader of expedition
Step-by-step explanation:
The climb to Mount Everest by Edmund Hillary and Tenzin Norgay on May 29, 1953, was a huge achievement, not only for the British monarchy but also because it was a successful assault after so many fails.
The decision to plant the Indian flag was done after Colonel John Hunt gave the permission. The Colonel was the leader of the expedition, a British team of 13. He, at that time, was serving in the King's Royal Rifle Corps.
Thus, the correct answer is option d.