The first passage details how the legal definition for "national minority" is very vague and so it leads to many difficulties for the Roma., lines
The second passage discusses how even though the Roma are nomadic, they fulfill the four objective elements of Capotorti's definition and, for this reason, should be considered a minority, lines 44-60.
So, answer choice (A) best illustrates the relationship between passage (A) and (B), since we have one document describing how something being vague brings about difficulties in classifying something as "technical", and the second document explains how something still qualifies as being "Technical."
Hope that clears things up! Please let us know if you have any other questions.
