Information:  - Mount Everest, also known in Nepal as Sagarmth and in China as Chomolungma/, is earth's highest mountain. Its peak is above sea level. Mount Everest is in the Mahalangur Range. The international border between China (Tibet Autonomous Region) and Nepal runs across Everest's summit point. Its massif includes neighbouring peaks Lhotse, ; Nuptse, , and Changtse, .  - Lhotse (Nepali: ) is the fourth highest mountain in the world at , after Mount Everest, K2, and Kangchenjunga. Part of the Everest "massif", Lhotse is connected to the latter peak via the South Col. Lhotse means South Peak in Tibetan. In addition to the main summit at above sea level, the mountain comprises the smaller peaks Lhotse Middle (East) at , and Lhotse Shar at . The summit is on the border between China, Tibet and the Khumbu region of Nepal.  - Richard Daniel "Dick" Bass (December 21, 1929  July 26, 2015) was an American businessman, rancher and mountaineer. He was the owner of Snowbird Ski Resort in Utah and the first man to climb the "Seven Summits," the tallest mountain on each continent.  - The term mountaineering describes the sport of mountain climbing, including ski mountaineering. Hiking in the mountains can also be a simple form of mountaineering when it involves scrambling, or short stretches of the more basic grades of rock climbing, as well as crossing glaciers.  - China, officially the People's Republic of China (PRC), is a unitary sovereign state in East Asia. With a population of over 1.381 billion, it is the world's most populous country. The state is governed by the Communist Party of China, and its capital is Beijing. It exercises jurisdiction over 22 provinces, five autonomous regions, four direct-controlled municipalities (Beijing, Tianjin, Shanghai, and Chongqing), and two mostly self-governing special administrative regions (Hong Kong and Macau), and claims sovereignty over Taiwan. The country's major urban areas include Shanghai, Guangzhou, Beijing, Chongqing, Shenzhen, Tianjin and Hong Kong. China is a great power and a major regional power within Asia, and has been characterized as a potential superpower.  - Nuptse or Nubtse (Sherpa: , Wylie: Nub rtse) is a mountain in the Khumbu region of the Mahalangur Himal, in the Nepalese Himalayas. It lies two kilometres WSW of Mount Everest. Nubtse is Tibetan for "west peak", as it is the western segment of the Lhotse-Nubtse massif.  - Tibet (Tibetan Pinyin: "boe", ; /i ts¹/) is a region on the Tibetan Plateau in Asia. It is the traditional homeland of the Tibetan people as well as some other ethnic groups such as Monpa, Qiang, and Lhoba peoples and is now also inhabited by considerable numbers of Han Chinese and Hui people. Tibet is the highest region on Earth, with an average elevation of . The highest elevation in Tibet is Mount Everest, Earth's highest mountain, rising 8,848 m (29,029 ft) above sea level.  - The Seven Summits are the highest mountains of each of the seven continents. Summiting all of them is regarded as a mountaineering challenge, first achieved on April 30, 1985 by Richard Bass.  - Britton Keeshan MD , MPH ( born December 1 , 1981 ) is one of the youngest persons to climb the tallest mountains on all seven continents in a feat known as the Seven Summits . He accomplished this feat on May 24 , 2004 , when he successfully summited Mount Everest at the age of 22 years and 179 days old . Keeshan held the record until June 2005 and is now listed as fourth on the list . Keeshan is the grandson of Bob Keeshan , the children 's performer better known as Captain Kangaroo . He had a close relationship with his grandfather , and he buried a photo of the two of them at the summit of Mount Everest . Keeshan is a graduate of Phillips Academy , Middlebury College , Dartmouth College , and the University of Vermont College of Medicine . He completed his pediatric residency at the Children 's Hospital of Philadelphia and is now a Pediatric Cardiology fellow at Seattle Children 's Hospital .  - Nepal, officially the Federal Democratic Republic of Nepal, is a landlocked central Himalayan country in South Asia. It has a population of 26.4 million and is the 93rd largest country by area. Bordering China in the north and India in the south, east, and west, it is the largest sovereign Himalayan state. Nepal does not border Bangladesh, which is located within only 27 km (17 mi) of its southeastern tip. It neither borders Bhutan due to the Indian state of Sikkim being located in between. Nepal has a diverse geography, including fertile plains, subalpine forested hills, and eight of the world's ten tallest mountains, including Mount Everest, the highest point on Earth. Kathmandu is the nation's capital and largest city. It is a multiethnic nation with Nepali as the official language.   - A mountain is a large landform that stretches above the surrounding land in a limited area, usually in the form of a peak. A mountain is generally steeper than a hill. Mountains are formed through tectonic forces or volcanism. These forces can locally raise the surface of the earth. Mountains erode slowly through the action of rivers, weather conditions, and glaciers. A few mountains are isolated summits, but most occur in huge mountain ranges.  - Changtse (Tibetan: "north peak") is a mountain situated between the Main Rongbuk and East Rongbuk Glaciers in Tibet, China, immediately north of Mount Everest. It is connected to Mount Everest via the North Col.    After reading the paragraphs above, we are interested in knowing the entity with which 'britton keeshan' exhibits the relationship of 'occupation'. Find the answer from the choices below.  Choices: - mountain  - mountaineer  - mountaineering  - rancher  - sovereign  - taiwan
The answer to this question is:
mountaineer