The deepest surface depression on the earth is –

A. Kurile Trench
B. Mariana Trench
C. Tonga-Kermadec Trench
D. Bentley Subglacial
Answer» B. Mariana Trench
Explanation: The Mariana Trench or Marianas Trench is the deepest part of the world's oceans. It is located in the western Pacific Ocean, to the east of the Mariana Islands. The trench is about2,550 kilometres long but has an average width of only 69 kilometres. It reaches a maximum- known depth of 10.994 km at the Challenger Deep.
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