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← ScienceWhich outcome occurs when neutron absorption is insufficient within fission fuel?
A)Runaway chain reaction accelerates rapidly✓
B)Moderator density achieves critical regulation
C)Cladding deformation gradually halts fission
D)Control rods achieve peak dampening efficiency
💡 Explanation
An uncontrolled chain reaction occurs because *neutron multiplication* becomes exponential. Therefore, a runaway reaction results, generating increased heat and pressure, rather than moderation or cladding responses, when absorption is inadequate to maintain criticality within safe parameter limits.
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