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Which risk increases when rapidly-inflating lava domes experience cooling?

A)Increased dome instability and potential collapse
B)Decreased gas escape causing lower pressure
C)Reduced viscosity and lower lava flow
D)Enhanced convection driving slower cooling

💡 Explanation

Increased dome instability occurs due to thermal stress fracturing, because differential cooling generates stress which overcomes the dome's materials before fracturing leads to a collapse via the mechanism of brittle failure. Therefore, instability increases; rather than reduced lava flow which occurs with higher temperatures.

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