The correct answer is: a) Social justice and equality.
Progressive writers and artists in Tamil Nadu often focus on themes of social justice and equality. They write about the struggles of the oppressed and marginalized, and they advocate for change. They often use their art to raise awareness of social issues and to inspire people to take action.
Mythological stories are also popular in Tamil Nadu, but they are not typically considered to be progressive. These stories often reinforce traditional values and hierarchies, and they can be seen as a way of maintaining the status quo.
Romantic narratives and historical epics are also popular in Tamil Nadu, but they are not typically considered to be progressive either. These stories often focus on individual love stories or on the deeds of great heroes, and they can be seen as a way of escaping from the realities of everyday life.
In conclusion, progressive writers and artists in Tamil Nadu often focus on themes of social justice and equality. They use their art to raise awareness of social issues and to inspire people to take action.