Criteria of selecting a research topic

I’m in my first year of doctoral program. I have been studying literature regularly to find a topic which interests me. But I could not find any! Thence I tried to look for some guide on internet and read a number of blog posts on how to choose a research topic. But then, all of those blogs come to same conclusion that a perfect research topic should be manageable, exploratory, addressing an unresolved problem, and should have plenty of resources for research. But how would I know if I can manage the topic which I’m considering? Who will tell me if this particular topic is exploratory or not?

Posted in: Research