To refine their model of deep-sea biological communities, the researchers investigated areas of the seafloor that are distant from any active hydrothermal vents. Which of the following is the best interpretation of the observation that some octopus species are only found near active hydrothermal vents?AOctopuses depend indirectly on inorganic compounds in the seawater surrounding hydrothermal vents.BOrganisms capable of moving across the seafloor are more difficult to observe than are organisms that are rooted in place.CGenetic bottleneck events in isolated areas of the deep ocean adversely affect some octopus populations but not others.DBiomass in a typical marine food web is expected to be greater in higher trophic levels than in lower trophic levels.

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