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Question

Difficulty: MediumIdentifying Main Conclusions

Consider the following argument:

In an effort to curb carbon emissions from aviation, international maritime and aviation bodies have proposed mandating that airlines blend synthetic sustainable aviation fuel (SAF) into standard jet kerosene supplies by 2030. Critics contend that synthetic SAF remains significantly more costly to synthesize, threatening airline profit margins. However, because synthetic SAF is chemically compatible with existing airport fueling infrastructure and does not require modifications to modern aircraft engines, adopting this blending quota is currently the most practical path toward near-term fleet decarbonization. Therefore, aviation regulators ought to proceed with enforcing the proposed SAF blending mandate as planned.

Statement: The assertion that synthetic SAF is chemically compatible with existing airport fueling infrastructure represents the ultimate main conclusion of the argument.

Answer: Answer

Answer

False. The statement misidentifies a supporting premise as the main conclusion.
The statement is false. In the argument, the author cites synthetic SAF's compatibility with existing infrastructure as a factual premise to demonstrate that the fuel blending strategy is practical. This premise supports the intermediate point about practicality, which ultimately leads to the author's main conclusion expressed in the final sentence: that regulators should proceed with enforcing the SAF blending mandate.

Step-by-Step Solution

1
Analyze the structural role of each claim in the argument.
The argument presents a proposal, notes a counterargument regarding high production costs, counters that objection with points about infrastructure compatibility and lack of retrofits, and finishes with a policy recommendation.
Deconstructing the argument structure separates contextual facts, opposing views, supporting premises, and the author's final position.
2
Identify the ultimate main conclusion of the passage.
The final sentence ('Therefore, aviation regulators ought to proceed with enforcing the proposed SAF blending mandate as planned') is the ultimate main conclusion.
The word 'Therefore' signals the main claim that all prior premises and rebuttals are assembled to justify.
3
Evaluate the specific statement in the question prompt.
The claim regarding infrastructure compatibility provides supporting factual evidence (a premise) rather than the main conclusion, making the statement false.
A claim that provides reasons or evidence in support of a further assertion is a premise, not the final main conclusion.

Key Concept

Distinguishing Supporting Premises from Main Conclusions
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Topics

Identifying Main Conclusions

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