The correct option is Sutta Pitaka.
Explanation
The Therigatha is a significant Buddhist scripture consisting of verses composed by bhikkhunis (nuns) who attained enlightenment. It is one of the earliest surviving collections of women's literature.
- Sutta Pitaka: The Therigatha is included in the Khuddaka Nikaya, which is the fifth division of the Sutta Pitaka. The Sutta Pitaka primarily contains the doctrinal discourses of the Buddha and his disciples. The Therigatha stands alongside the Theragatha (Verses of the Elder Monks).
- Vinaya Pitaka: This text deals with the rules of conduct and discipline for the monastic order (Sangha). It focuses on regulations rather than poetic expressions of spiritual attainment.
- Abhidhamma Pitaka: This basket deals with the philosophical and psychological analysis of the teachings (Dhamma). It is scholastic in nature and does not contain the poetic anthologies.
- Mahavamsa: This is a historical chronicle of Sri Lanka written in the 5th century CE. While it is an important Pali text, it is not part of the canonical Tripitaka.
Key Takeaway: The Therigatha is part of the Khuddaka Nikaya within the Sutta Pitaka of the Pali Canon.