Question

where are hydrothermal vents most commonly found?
o along mid - ocean ridges, where tectonic plates are moving apart and magma is close to the surface
o in subduction zones, where one tectonic plate slides beneath another
o near major river mouths where sediment is deposited.
o in shallow, coastal areas with high biological productivity.

Explanation:

Hydrothermal vents form due to geological processes related to tectonic plate movement. Mid - ocean ridges are areas where tectonic plates diverge (move apart), and magma is near the surface. This environment allows seawater to circulate through the crust, get heated, and then emerge as hydrothermal vents. Subduction zones have different geological processes (one plate sliding under another) that are not the primary location for most hydrothermal vents. River mouths (sediment deposition) and shallow coastal areas (biological productivity) are not related to the geological processes that form hydrothermal vents. So the correct option is the one about mid - ocean ridges.

Answer:

A. Along mid - ocean ridges, where tectonic plates are moving apart and magma is close to the surface