Argument Breakdown:
First Boldface: "Plant scientists have used genetic engineering on seeds to produce crop plants that are highly resistant to insect damage."
This is a factual statement about a development (the creation of genetically engineered seeds that are resistant to insect damage). It's a positive outcome, but it's not the final conclusion of the argument.
Second Boldface: "The use of genetically engineered seeds of this kind is likely to become widespread."
This is a predictive statement about the future, indicating that the use of these seeds is expected to become common due to rising consumer demand for pesticide-free produce. It serves as a key point in reaching the final conclusion of the argument.
Now, let's go through (D) carefully:
Option (D):
First part: "The first provides a certain outcome that the argument seeks to weigh against."
The first boldface presents a positive result (resistance to insect damage), but it comes with significant trade-offs (higher costs and additional resource needs). The argument then weighs these benefits against the drawbacks (high seed cost, increased need for fertilizer and water), leading to the main conclusion.
Second part: "The second is a consideration that supports the main conclusion."
The second boldface (predicting that genetically engineered seeds will become widespread) is part of the argument's final conclusion and is supported by the fact that consumer demand for pesticide-free produce is increasing.
Thus, the first boldface provides a result (insect resistance) that must be considered alongside its drawbacks, and the second boldface is a prediction supported by growing consumer demand, which strengthens the conclusion.
Conclusion:(D) is correct because the first boldface presents an outcome that the argument evaluates, while the second boldface presents a factor (consumer demand) that supports the argument's conclusion.