Multiple choice general knowledge What's the deepest place in the ocean? Mariana Trih Mariana Tinch Mariana Trench Mariana Trance Reveal answer Fill a bubble to check yourself C Correct answer Explanation The Mariana Trench in the western Pacific Ocean is the deepest part of the world's oceans, with the deepest point (Challenger Deep) reaching approximately 11,034 meters (36,201 feet) below sea level.