Read the passage below and determine which combination

Solution

Analysis: The core argument made by advocates is that algae-based biofuels could completely transform sustainable aviation adoption worldwide by addressing the cost and environmental drawbacks of current options. We must evaluate which statements support this claim: Statement 1 strengthens the argument. One of the biggest hurdles to adopting new alternative fuels is the cost of rebuilding logistics systems. By demonstrating that this fuel can seamlessly utilize existing airport pipelines and engine architectures with "zero modification costs," Statement 1 proves that switching over is financially and operationally viable for airlines, heavily strengthening the adoption argument. Statement 2 strengthens the argument. The passage highlights that a major criticism of current alternatives is the "environmental footprint associated with harvesting its primary crop-based feedstocks." Statement 2 directly addresses this flaw by proving that marine algae can be harvested sustainably in the ocean without causing land-based environmental damage like deforestation. This validates the environmental advantage claimed by advocates. Statement 3 WEAKENS the argument. By revealing a severe operational vulnerability—a higher freezing point that makes the fuel unsafe for ultra-long-haul flights at high altitudes—this statement highlights a critical limitation. It demonstrates that the new technology cannot fully replace traditional fuel across all flight segments, undermining the claim that it will easily transform global adoption. Therefore, since Statements 1 and 2 strengthen the argument while Statement 3 weakens it, A is the correct answer choice.