The Tripitaka, also known as the Pali Canon, is a principal Buddhist scripture collection written in Pali, containing teachings attributed to the Buddha and forming the doctrinal basis of Theravada Buddhism.
1. Tripitaka as Primary Collection:
Assertion (A) is valid; the Tripitaka is a key Buddhist scripture collection and the doctrinal core of Theravada Buddhism.
2. Tripitaka's Three Pitakas:
Reason (R) is also valid; the Tripitaka comprises three distinct collections: the Vinaya Pitaka (monastic discipline rules), the Sutta Pitaka (Buddha's discourses), and the Abhidhamma Pitaka (philosophical and doctrinal analysis).
3. Conclusion:
As both Assertion (A) and Reason (R) are accurate and Reason (R) effectively explains Assertion (A), option (A) is the correct choice.