Which of the following is not true of deep ocean trenches?

Which one of the following is NOT true of deep ocean trenches?    A) they may act as sediment traps     B) they are geologically very stable     C) they are long and narrow depressions     D) they are sites where plates plunge back into the mantle

Answer

The correct answer for the question is that the statement that they are geologically very stable is false as they are formed when one oceanic plate subduct under the continental plate (the density of oceanic plate is higher than the continental plate and hence it subduct) and since the plates are always in motion (they are hiding over asthenosphere, which exerts a drag force on plates thus moving them continuously) therfore this deep oceanic trench is not a very geologically stable place and h nice the option that is not true is option “B)”.

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