Please answer the following question: Information: - The Tibetan people are an ethnic group that is native to Tibet. They number an estimate of 7.8 million. Significant Tibetan minorities also live outside of Tibet Autonomous Region (TAR) in China, and in India, Nepal, and Bhutan. - The Tibetan Plateau, also known in China as the QinghaiTibet Plateau or the Qingzang Plateau or Himalayan Plateau, is a vast elevated plateau in Central Asia and East Asia, covering most of the Tibet Autonomous Region and Qinghai Province in western China, as well as part of Ladakh in Jammu and Kashmir state of India. It stretches approximately north to south and east to west. With an average elevation exceeding , the Tibetan Plateau is sometimes called "the Roof of the World" and is the world's highest and largest plateau, with an area of (about five times the size of Metropolitan France). Sometimes termed the Third Pole, the Tibetan Plateau contains the headwaters of the drainage basins of most of the streams in surrounding regions. Its tens of thousands of glaciers and other geographical and ecological features serve as a "water tower" storing water and maintaining flow. The impact of global warming on the Tibetan Plateau is of intense scientific interest. - Trisong Detsan or Trisong Detsen was the son of Me Agtsom and one of the emperors of Tibet. He ruled from 755 until 797 or 804 CE. Trisong Detsen was the second of the Three Dharma Kings of Tibet, playing a pivotal role in the introduction of Buddhism to Tibet and the establishment of the Nyingma or "Ancient" school of Tibetan Buddhism. - Dharma ("dharma", ; "dhamma") is a key concept with multiple meanings in the Indian religions Hinduism, Buddhism, Sikhism and Jainism. There is no single word translation for "dharma" in western languages. - The Hui people (Xiao'erjing: ; Dungan: , "Xuejzw") are a Chinese ethnic group which is composed predominantly of adherents of the Muslim faith and found throughout China, though they are concentrated mainly in the Northwestern provinces of the country and the Zhongyuan. According to a 2011 census, China is home to approximately 10.5 million Hui people, the majority of whom are Chinese-speaking practitioners of Islam, though some practice other religions. - Buddhism (or ) is a religion and dharma that encompasses a variety of traditions, beliefs and spiritual practices largely based on teachings attributed to the Buddha. Buddhism originated in India sometime between the 6th and 4th centuries BCE, from where it spread through much of Asia, whereafter it declined in India during the middle ages. Two major extant branches of Buddhism are generally recognized by scholars: Theravada (Pali: "The School of the Elders") and Mahayana (Sanskrit: "The Great Vehicle"). Buddhism is the world's fourth-largest religion, with over 500 million followers or 7% of the global population, known as Buddhists. - Tibet (Tibetan Pinyin: "boe", ; /i ts/) 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 (29,029ft) above sea level. - Sadnalegs ( Tibetan : ) or Tride Songtsen ( Tibetan : , Wylie : Khri - lde - srong - btsan ) , was the youngest son of King Trisong Detsen of Tibet ( reigned c. 800 -- 815 CE -- though various accounts give the beginning of his reign as 797 or 804 CE ) . Trisong Detsen retired to live at Zungkar and handed power to his second son , Mune Tsenpo , in 797 . From this point there is much confusion in the various historical sources . It seems there was a struggle for the succession after the death of Trisong Detsen . It is not clear when Trisong Detsen died , or for how long Mune Tsenpo reigned . It is said that Mune Tsenpo was poisoned by his mother who was jealous of his beautiful wife . Whatever the case , both the Old Book of Tang and the Tibetan sources agree that , since Mune Tsenpo had no heirs , power passed to his younger brother , Sadnalegs , who was on the throne by 804 CE. The other brother , Mutik Tsenpo , was apparently not considered for office as he had previously murdered a senior minister and had been banished to Lhodak Kharchu near the Bhutanese border . As he was quite young when he came to the throne , Sadnalegs was assisted by four experienced ministers , two of whom were also Buddhist monks . They followed the policies of the previous kings . Sadnalegs had four wives from different Tibetan clans . - Tibetan Buddhism is the body of Buddhist doctrine and institutions characteristic of Tibet, the regions surrounding the Himalayas and much of Central Asia. It derives from the latest stages of Indian Buddhism and preserves "the Tantric status quo of eighth-century India." Tibetan Buddhism aspires to Buddhahood or rainbow body. - The Nyingma tradition is the oldest of the four major schools of Tibetan Buddhism (the other three being the Kagyu, Sakya and Gelug). "Nyingma" literally means "ancient," and is often referred to as Ngangyur (, "school of the ancient translations" or "old school") because it is founded on the first translations of Buddhist scriptures from Sanskrit into Old Tibetan in the eighth century. The Tibetan alphabet and grammar was actually created for this endeavour. After reading the paragraphs above, we are interested in knowing the entity with which 'sadnalegs' exhibits the relationship of 'religion'. Find the answer from the choices below. Choices: - buddhism - buddhist - hinduism - india - islam - mahayana - muslim - theravada - tibetan buddhism
A:
tibetan buddhism