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Which risk increases when early Chinese crossbow trigger strength declines?

A)Reduced bolt kinetic energy attained
B)Increased rope unraveling frequency
C)Material embrittlement from iron impurities
D)Diminished repeating crossbow capacity

💡 Explanation

Lower trigger strength yields reduced stored energy, leading to diminished acceleration via ELASTIC POTENTIAL ENERGY CONVERSION, because elastic PE converts to KE. The consequence is lower kinetic energy transferred to the bolt, therefore option A, rather than the other factors dominating, because the problem is trigger related, not frame.

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