Absolutely. You're asking why D and not C, so I'm guessing that you correctly identified the conclusion of Lea's argument as being that "contemporary art has become big business."
However, Susan's remarks indicate that she does not necessarily disagree with this conclusion; rather, she disagrees with Lea when Lea says that "the work of contemporary artists is utterly bereft of spontaneity and creativity, as a visit to any art gallery demonstrates."
We know that Susan disagrees with this portion of Lea's argument because Susan states that "one can still find spontaneous, innovative new artwork in most of the smaller, independent galleries."
When Susan says this, she is disagreeing with Lea's contention that the work of contemporary artists is utterly bereft of spontaneity and creativity, as a visit to any art gallery demonstrates.
Answer A is incorrect because Susan doesn't mention anything about large galleries. We can get rid of this.
Answer B is incorrect because Susan doesn't say anything about most galleries; she just says stuff about most of the SMALLER galleries. We have no idea about what percentage of all galleries are small vs. not small.
Answer C is incorrect because Susan doesn't say anything about big business. Susan could still technically agree with this statement, as we have no evidence how she feels about it.
Answer D is correct. It states that some smaller art galleries still exhibit creative new artwork. Lea would not agree with this, as she believes that all art galleries do not possess work of contemporary artists (new artwork) that has spontaneity and creativity. Susan, however, would agree with this statement, as she believes that most of the smaller, independent galleries still have spontaneous, innovative new artwork.
Answer E is incorrect because Susan doesn't talk about self-expression at all, so we have no idea how she feels about this statement.
Does this make sense? Let us know if you have any more questions!
