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← ScienceWhich outcome relating to Helium-4 production occurs during stellar nucleosynthesis via the proton-proton chain?
A)Increased average binding energy per nucleon✓
B)Decreased energy output and stellar cooling
C)Reduced Coulomb repulsion between nuclei
D)Enhanced gravitational collapse of stellar core
💡 Explanation
Increased average binding energy results because greater stability of He-4 after nuclear fusion generates energy via mass defect, a form of mass-energy equivalence. This outcome increases energy; therefore it warms, rather than the limited effects achieved by other options.
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