Because the cork stoppers in wine bottles can leak, crumble, or become moldy, winemakers must often discard a significant proportion of their inventory of bottled wine. Bottlemasters, Inc., produces a plastic stopper that cannot leak, crumble, or mold. Bottlemasters’s plastic stopper is available to winemakers for a price only slightly higher than that of traditional cork stoppers, and cork prices are expected to rise considerably in the near future. Therefore, the Bottlemasters plastic stopper will most probably increase its share of the market for wine-bottle stoppers.
In the argument given, the two portions in boldface play which of the following roles?The argument concludes that Bottlemasters’s plastic stopper will probably gain market share. The first boldface supports this by showing that the plastic stopper avoids major problems with cork. The second boldface also supports the conclusion by showing that cork stoppers are likely to become more expensive.
Both boldface portions are evidence supporting the same
market-share conclusion.
A. The first and the second each provide evidence to support the conclusion of the argument.
This is correct. The first gives a quality advantage of the plastic stopper, and the second gives a likely price advantage as cork becomes more expensive.
B. The first provides evidence to support the main conclusion of the argument; the second is that main conclusion.
This is incorrect. The second boldface is not the conclusion; the conclusion is that the plastic stopper will probably increase its market share.
C. The first provides evidence to support the main conclusion of the argument; the second is an objection that has been raised against that main conclusion.
This is incorrect. The second boldface supports the conclusion; it is not an objection.
D. The first and the second are each claims that have been advanced in support of a position that the argument opposes.
This is incorrect. The argument does not oppose those claims. It uses them as support.
E. The first is evidence that has been used to support a position that the argument opposes; the second is a claim advanced in support of the main conclusion of the argument.
This is incorrect. The first supports the argument’s own conclusion, not an opposing position.
Answer: (A)