Like njcooke03 said, thats a MAJOR assumption to think "urban" pollution refers only to a "major cities" pollution. Can someone else help explain why A is even in consideration without a moon analogy.

So now we bring in reality and real world assumptions that are NOT stated anywhere in the passage?

How can you say that X is wrong when the question specifically states that the statements above are TRUE?

Well then "art" in D can represent sculptures too. Art in D is very BROAD too. Need better verbiage and explanations with that confidence.

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"Another way to think about support is to “read between the lines.”" Then why did we learn that assumptions are wrong? Reading between the lines is pretty close to assuming.