Which of the following is also known as the ‘White Mountain’?

The correct option is Dhaulagiri I.

Explanation:
The name Dhaulagiri is derived from the Sanskrit language, where dhawala means dazzling, white, or beautiful, and giri means mountain. Together, they translate literally to "White Mountain".

Here is a detailed breakdown of the mountains mentioned in the options to provide additional context:
1. Dhaulagiri I: With an elevation of 8,167 meters (26,795 feet) above sea level, Dhaulagiri I is the seventh-highest mountain in the world. It is located entirely within Nepal and is bounded on the north and estuary by the Gandaki River system.
2. Cho Oyu: Standing at 8,188 meters (26,864 feet), it is the sixth-highest mountain in the world. In Tibetan, its name means "Turquoise Goddess".
3. Makalu: At 8,485 meters (27,838 feet), Makalu is the fifth-highest mountain in the world. It is situated on the border between Nepal and Tibet and is known for its distinct four-sided pyramid structure.
4. Lhotse: Standing at 8,516 meters (27,940 feet), Lhotse is the fourth-highest mountain in the world and is connected to Mount Everest via the South Col.