Why Do Deep-Sea Organisms Cluster Around Hydrothermal Vents

Multiple Choice

Why do deep-sea organisms cluster around hydrothermal vents?

A) these organisms prefer the warmth of the vent
B) these organisms depend on the organic material drifting down from surface waters to the vent for food
C) these organisms obtain energy by chemosynthesis from inorganic molecules of vents
D) these organisms have a light phobia
E) these organisms use the pressure of the deep ocean to metabolize organic molecules