Which of the following ocean-floor features is associated with areas where oceanic crust is broken down?

abyssal plain

mid-ocean ridge

trench

seamount

The best and most correct answer among the choices provided by your question is the third choice.

The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. They are also the deepest parts of the ocean floor.

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Answer they are produced by collision of tectonic plates;

Ibelieve this is true m8