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Which outcome occurs due to decreased neutron moderator density during nuclear fission?

A)Reduced neutron capture probability increases reactivity
B)Enhanced radiation shielding decreases thermal output
C)Increased fuel enrichment stabilizes fission rates
D)Accelerated decay product removal yields higher power

💡 Explanation

Reduced moderator density decreases neutron moderation, thus lowering the probability of neutrons being captured by uranium, because there's a lower likelihood of initiating further fission reactions. Therefore reactivity declines rather than increasing, due to poorer neutron thermalization.

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