Thanks for posting,
pretty_shy96! Function/purpose questions can be very challenging!
ccheng has some really great thoughts on this! In particular, this reasoning is very strong:
Lines 8-11 are about a history of objection - a part of UN charter that has been objected to. Lines 20-22 are about an effort for revision - the proposed amendments by members of delegations.
The specific reason for this proposal is stated in lines 14-17, "the language of Article I was not strong enough, and that the Charter as a whole did not go far enough ...". Answer choice (B) paraphrases this reason well and fits the purposes of these two quoted sentences.
The key, as
ccheng notes, is to realize how the two quotations relate to one another. The first quote is something people didn't like (specifically because
the language "was not strong enough"), and the second is what they proposed replace it.
(B) captures this contrast perfectly.
Let's review the specific elements that make each other answer incorrect:
(A) The two documents are certainly contrasted, but the passage never defines human rights at all! There's certainly no indication that the two documents had different definitions.
(C) No 'bureaucratic vocabulary' is pointed out. Also, the second is a
response to the first, so
differences are key, not similarities.
(D) We have no indication that the author thinks these quotes are the most important part of the documents.
ccheng is correct that author voice is absent in this first paragraph. Even when we get the author's opinion on the nonbinding legal status much later on, that applies to the UDHR, not the original UN Charter and the proposal being quoted.
(E) While differences are key, nothing about the prose style of each document is noted as significant.
To determine why an author mentions a specific item, look at the surrounding text. It may serve as a sort of connective tissue linking one idea to another, and giving direct indications of author's purpose.
Let me know if this completely answers your question!