Who is first man to climb Everest without oxygen
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Luice Lexis
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Phu Dorji
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Dora Phillip
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None of the above
B
Correct answer
Explanation
Phu Dorji Sherpa of Nepal was the first person to climb Mount Everest without supplemental oxygen, achieving this feat on May 8, 1978. This was considered nearly impossible due to the extreme altitude and thin air. His achievement opened the door for 'alpine style' climbing at extreme altitudes. The question appears to be from an older source as there have been subsequent notable oxygen-less ascents.