Answer:
The correct answer is heating of water by the hot rocks or the magma.
Step-by-step explanation:
The eruption of water from the vents is a result of the geologic activity taking place within the Earth. The water present deep within the ground gets heated up by the hot rocks or the magma, leads to an elevation in the pressure, and as a consequence shooting of water takes place up in the air, that appears like vents are erupting.
The majority of the vents are witnessed in the regions, which are near to a volcano or are associated with a volcano via underground channels.