the stiff basaltic rocks of the sea floor are bent as they enter subduction zones. this means that: group of answer choices subduction zones produce sea-floor trenches, which may be filled with water or with sediment washed from nearby land. erosion of continents by rivers near subduction zones produces deep troughs that include the deepest water in the ocean. bending of sea-floor rocks at subduction zones produces high ridges, such as the coast ranges of california. subduction zones produce death-valley-type down-faulted spreading valleys, which form the deepest parts of the ocean.