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what happens immediately before a volcano erupts ?

a) magma collects in the mantle

b) lava hardens to form volcanic rock

c) expanding gases pushes magma through the pipe

d) the temperature in the magma chamber decreases

4 answers

I suspect that you are right.
I have no clue. I am not sure, it is a unit test, so... I AM IN DEEP DUDU!!!!
The answer is C. Im pretty sure.
I think it is C or B
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