Hi emily,
Thanks for the question! I love this question—really this question
type—as it's a Supporter Assumption problem. What that means is that the conclusion will present an idea or some term(s) that aren't mentioned elsewhere in the stimulus, and that's a real problem for the author: new info in a conclusion is immediately suspect. I mean, why believe it if there's no prior support for it? So if we're meant to explain the author's reasoning in arriving at that new information, it becomes necessary to connect it back to the premises given and try to have it become a more cohesive argument (note that this is also how Justify questions often operate).
Not all Assumption questions are Supporters, as the other type, Defender, appears a little more often, but when you see Supporters you're in good shape if you know how they work!
So what's the new info here that tipped me off?
The conclusion introduces the idea of having "freedom of expression," meaning people are able to talk about things freely and without censorship. Nowhere else in this stimulus is the notion of free discussion mentioned, so the correct answer choice MUST connect that novel piece to some other piece in the premises. It doesn't have to be a perfectly explicit premise point but it does need to be a central idea suggested there.
That means that right away any choice that doesn't contain the idea of free expression (or anything synonymous) can be ruled out!
Let's check:
(A) has it: "complete freedom of expression"
(B) does not: it's only about the availability of internet access
(C) has it: "discuss issues freely"
(D) does not: it's only about the importance of ideas discussed online
(E) does not: it's only about public forums besides the internet
So we're down, just that quickly, to (A) and (C).
Now we need to decide which of those two ties the need for free expression to the idea of what it takes for democracy to work. Answer choice (A) fails in that, since it only tells us
how much freedom of expression public square speakers had ("complete freedom"), and nothing on why it matters to democracy. It doesn't tie freedom of expression to anything else!
Answer choice (C) gives us what we need, though. It says if people cannot speak freely then a public forum may not perform as well (be as effective) as a tool of democracy. That's our prephrase: the author thinks free expression (online and in public) is important for these tools of democracy to work.
So a little tricky at first, but now that you've seen this in operation—or at least seen it made explicit, since I'm certain you've seen this question type many, many time before—you should be able to check every future Assumption question to see if it's a Supporter, and then apply this approach to quickly move through the answers
I hope that helps!
Jon