Hello! I think the answer is B. Now, I don't know if I am correct or not (for the time being) but I will get back to you guys if I am wrong. It just makes the most sense to me and that is why I chose it.
If people wanted to move into a polis, they would need a citizenship. There were two types of democracy, direct democracy and representative democracy. Direct democracy is when citizens take part in the every day affairs of the government.