In addition to the labor and materials used to make wine, the reputation of the vineyard where the grapes originate plays a role in determining the price of the finished wine. Therefore, an expensive wine is not always a good wine.
(1) Labor, materials and reputation plays important role in determining the price of wine.
__
(2) Therefore, an expensive wine is
not always a good wine.
the goal is to find a piece of information that can support the claim that "some expensive wine are not a good wine" and note that "good/quality" only appears in the conclusion while it's missing in the premise. So expect to see a link between the premises and the conclusion in the answer choices
(A) The price of a bottle of wine should be a reflection of the wine's quality.
This actually weakens the conclusion. It plays exactly the opposite. If price should be a reflection of quality, then certainly, expensive wines are good!. Incorrect.
(B) Price is never an accurate indication of the quality of a bottle of wine.
Honestly, when I solved this question I chose this choice. But I will explain my mistake here,
Let's put back the conclusion along side this choice:
(from conclusion) Therefore, an expensive wine is not always a good wine.
(from choice B) Price is never an accurate indication of the quality of a bottle of wine.
it's like a reptition in different words of the same conclusion except for the fact "never" makes his conclusion absolute "an expensive wine is never a good wine".
(C) The reputation of a vineyard does not always indicate the quality of its wines.
I think (correct me if I am wrong), there can be 2 more variants of this choice that can be correct:
The reputation of a vineyard does not always indicate the quality of its wines.
Labor does not always indicate the quality of its wines.
Materials used in the wine does not always indicate the quality of its wines.
If we negate this choice we get:
The reputation of a vineyard
always indicate the quality of its wines. The author conclusion weakened.
(D) The reputation of a vineyard generally plays a greater role than the quality of its grapes in determining its wines' prices.
We only know that there are three factors that determine the price of wine, but we don't know how much each of them plays. Incorrect.
(E) Wines produced by lesser-known vineyards generally are priced to reflect accurately the wines' quality.
This has no effect on our conclusion. so what?