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← ScienceWhich limitation arises when fuel rods degrade during fission?
A)Neutron moderation efficacy diminishes notably✓
B)Gamma radiation levels drop severely
C)Coolant boiling transitions more gradually
D)Fission product containment improves unexpectedly
💡 Explanation
Reduced fuel integrity in fission reactors increases parasitic absorption, because released fission products compete with the moderator for neutrons applying neutron poisoning; therefore, reaction rates drop rather than remaining constant or undergoing gamma ray changes.
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