Need help finding the research paradigm for Fredrick Dougl. Sociology book report?

Im writing a sociology book report on "Narrative of the life of Fredrick Dougl" and one of the topics I need to address is which research paradigm does Dougl follow and it gives you structural-functional, social conflict, or symbolic interactionist. I'm a little confused. This is for a college paper so please add your reasoning for why. Thank you.