Question

what causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?
o gravity
o water flow
o expanding gases
o convergent boundaries

Explanation:

Magma contains dissolved gases. As magma rises, pressure decreases, causing these gases to expand. This expansion creates a force that pushes magma through the pipe and vent of a volcano. Gravity would pull magma down, water flow isn't the main force here, and convergent boundaries relate to plate movement (not the immediate force pushing magma up).

Answer:

C. expanding gases