In both cases, the authors note that definitions of minorities are problematic for Roma people. Passage A notes this in a general context, while passage B relates to the way that the citizenship criterion is an issue, since they are often nomadic and not citizens. While answer choice B ( confusing and unclear) might apply to passage A, this is not a good fit for passage B. Passage B notes a specific problem for Roma people, that they have been denied citizenship. There is nothing confusing or unclear about this, it simply creates difficulties for them.
