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← ScienceWhich risk increases when the moderator is lost in fission?
A)Lower neutron absorption probability
B)Increased gamma radiation energies
C)Reduced rate thermal neutron production
D)The fuel elements will melt rapidly✓
💡 Explanation
A runaway reaction occurs because the moderation of neutron speeds slows neutrons effectively multiplying fission reactions; therefore, the fuel cladding melts due to the unchecked rate, rather than decreased absorption or increases in gamma production.
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