Early Bhakti Saints, Alvars in South India were immersed in the devotion of

The Bhakti movement in South India (c. 7^th to 9^th centuries CE) was spearheaded by two groups of poet-saints: the Alvars and the Nayanars. According to official sources like NCERT, the Alvars (literally, those who are 'immersed' in devotion) were devotees of Lord Vishnu. They traveled across the region singing hymns in Tamil in praise of Vishnu and his various incarnations.

The hymns of the twelve Alvars were compiled in the Nalayira Divya Prabandham, which is held in high esteem as the 'Tamil Veda'. In contrast, the Nayanars were a group of sixty-three saints devoted to Lord Shiva. While Alvars worshipped avatars like Krishna and Ram, their primary devotion was directed towards Vishnu as the supreme deity, making option D the most accurate choice.