निम्नलिखित में से किस ऋषि को प्राचीन सांख्य दर्शन में उनके मूलभूत योगदान का श्रेय दिया जाता है?

The philosophical system propounded by Bhakti saint Ramanujacharya is known as:

The theology of the Varkari movement is primarily rooted in which philosophy, as articulated by Sant Dnyaneshwar?

Which of the following is NOT accepted as a valid epistemological source (Pramana) in Jainism?