Thanks for the question! So we’re asked here for the relationship between a pair of documents that’s most analogous to the relationship between the two passages here. What is the relationship between the passages? Basically, one defines a kind of group, and then the second says that this specific group (the Roma) belong in that kind of group (national minorities).
Take a look at (E), which tells us that the documents would be “The Conceptual Links Between Professionalism and Technical Expertise” and “A Refutation of the Union’s Position Regarding Which Types of Jobs Should be Classified as Neither Professional nor Technical.” But notice that this is a refutation. So it would say that the Roma shouldn’t be protected as “national minorities,” which is the opposite of what the second passage says.
(A), on the other hand, fits, since it would talk about what technical jobs are, and then the second document would argue that welding
Hope this helps! Feel free to ask any other questions that you might have.