The correct answer is: a) Tamil identity and social justice.
The Dravidian Movement was a social and political movement that emerged in Tamil Nadu in the early 20th century. It emphasized the importance of Tamil identity and social justice, and opposed the dominance of the Brahminical upper castes in Tamil society. The movement was led by Periyar E.V. Ramasamy, who called for the abolition of caste discrimination and the empowerment of women. The Dravidian Movement had a significant impact on Tamil society, and its legacy continues to be felt today.
Option b) is incorrect because the Dravidian Movement did not emphasize the revival of traditional Hindu practices. In fact, the movement was often critical of Hinduism, which it saw as a Brahminical religion that oppressed the lower castes.
Option c) is incorrect because the Dravidian Movement did not cooperate with British authorities. In fact, the movement was often critical of British rule, and it played a significant role in the Indian independence movement.
Option d) is incorrect because the Dravidian Movement was not a pan-Indian nationalist movement. It was a Tamil nationalist movement that focused on the rights of the Tamil people.