The correct answer is: A. Pallavas, Pandyas and Cholas.
The Saivaite Nayanmars and Vaishnavite Alwars were Tamil saints who lived in the 6th to 9th centuries CE. They preached the Bhakti Cult, a devotional movement that emphasized the importance of personal devotion to a particular deity. The Bhakti Cult was a major force in the development of Hinduism, and it continues to be an important part of Hindu practice today.
The Pallavas, Pandyas, and Cholas were three of the most powerful dynasties in South India during the time of the Nayanmars and Alwars. They ruled over large kingdoms that included much of the present-day states of Tamil Nadu, Kerala, and Andhra Pradesh. The Pallavas were the first of these dynasties to come to power, and they ruled from the 3rd to the 9th centuries CE. The Pandyas ruled from the 6th to the 13th centuries CE, and the Cholas ruled from the 9th to the 13th centuries CE.
All three dynasties were patrons of the arts and literature, and they supported the development of the Bhakti Cult. The Nayanmars and Alwars were often associated with particular temples, and they composed hymns and poems in praise of the deities enshrined there. The Bhakti Cult was a popular movement, and it attracted followers from all walks of life.
The Bhakti Cult had a profound impact on the development of Hinduism. It emphasized the importance of personal devotion to a particular deity, and it promoted the idea of equality between all people. The Bhakti Cult also helped to spread Hinduism to new areas, and it continues to be an important part of Hindu practice today.