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Which outcome increases when a heat engine attempts supercritical fluid heating?

A)Reduced thermal energy conversion efficiency
B)Increased phase-transition temperature stability
C)Enhanced working-fluid density uniformity
D)Higher engine component mechanical durability

💡 Explanation

Inefficient phase-change heat transfer causes efficiency loss, because entering the supercritical region prevents the phase-transition driving temperature effects. Therefore, energy conversion decreases, rather than temperature stabilizing or mechanical components becoming durable. The transition dynamics are obscured.

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