The correct answer is C. Tripitaka.
The Tripitaka is the sacred text of Buddhism. It is a collection of three baskets or pitakas, which contain the teachings of the Buddha. The first basket, the Vinaya Pitaka, contains the rules of monastic discipline. The second basket, the Sutta Pitaka, contains the Buddha’s discourses. The third basket, the Abhidharma Pitaka, contains the Buddha’s philosophical teachings.
The Upanishads are a collection of Hindu scriptures that are considered to be the source of Hindu philosophy. The Vedas are a collection of Hindu scriptures that are considered to be the source of Hindu law and ritual. The Jatakas are a collection of Buddhist stories that tell the previous lives of the Buddha.
The Upanishads are not considered to be sacred texts by Buddhists. The Vedas are not considered to be sacred texts by Buddhists because they do not contain the teachings of the Buddha. The Jatakas are not considered to be sacred texts by Buddhists because they are not considered to be the word of the Buddha.
The Tripitaka is considered to be the most sacred text of Buddhism because it contains the teachings of the Buddha. The Buddha is considered to be the founder of Buddhism and his teachings are considered to be the ultimate authority on Buddhism.