The deepest oceanic trench 'Mariana' is located in -

The correct answer is Option (3) → Pacific Ocean

The Mariana Trench lies in the western Pacific Ocean, east of the Mariana Islands near Guam. Its deepest point, the Challenger Deep, is about 10,900 m (nearly 11 km) below sea level, the deepest known point of the Earth's oceans. The trench formed where the Pacific Plate sinks beneath the Mariana Plate.