question: In many places, small hills rise above the ocean floor. these hills are undersea volcanoes, called what?
distractor3: ridges
distractor1: reefs
distractor2: corals
correct_answer: seamounts
support: The ocean floor is not totally flat. In many places, small hills rise above the ocean floor. These hills are undersea volcanoes, called seamounts ( Figure above ). Some rise more than 1000 m above the seafloor.