Question

which is the deepest point of the earth

Answer 1

The Challenger Deep in the Mariana Trench is the deepest point of the earth.

Answer 2

The Challenger Deep in the Mariana Trench is the deepest known point in Earth's oceans. In 2010 the United States Center for Coastal & Ocean Mapping measured the depth of the Challenger Deep at 10,994 meters (36,070 feet) below sea level with an estimated vertical accuracy of ± 40 meters.