*I WILL PICK THE BRAINLIEST, ANSWER THIS QUESTION* Which of the following describes seamounts?

a.) a process brought about due to volcanic upheaval; the undersea equivalents of terrestrial mountains that rise from the sea bottom and do not break the surface of the water

b.) a method used by tripod fish, because of their blindness, in which subtle turbulence clues help the fish sense prey

c.) a form of merging significantly denser salt water that is created from the tectonic movement of large salt deposits