Option 1 is the correct answer. Periyar E.V. Ramaswamy Naicker was the founder of the Dravida Kazhagam (DK), a political party in India. He was a social activist and advocate for the rights of the lower castes and women. Periyar played a significant role in the Self-Respect Movement in South India, which aimed to eradicate caste discrimination and promote social equality. He advocated for the rights of the Dravidian people and sought to establish a separate Dravida Nadu for them. The Dravida Kazhagam was founded in 1944, and Periyar remained its leader until his death in 1973. His work and ideology continue to have a profound impact on Dravidian politics in Tamil Nadu.