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Which outcome results when helium-4 nuclei reach the endpoint of stellar nuclear fusion, regarding its overall energy output?

A)Energy release through alpha capture
B)Further fusion yielding light elements
C)Net energy absorption via fusion
D)Iron production starts spontaneously inside

💡 Explanation

Helium-4 fusion into heavier nuclei absorbs energy overall because the binding energy per nucleon for elements heavier than helium decreases; therefore no energy is released, rather than exothermic fusion observed with lighter elements, because the strong force is less effective at that atomic weight.

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