Question

What is the depth of the Mariana trench?
A. 8,992 m
B. 9,245 m
C. 10,994 m
D. 11,015 m

Answer 1

Hint: Located in the western Pacific, this trench is shaped like a crescent, about 200 kilometres near an volcanic archipelago of the same name.

Complete answer: - Option D is correct. Earlier, the Challenger Deep was the lowest point on earth. Trenches are formed when two tectonic plates clash. A fun fact is that the United States of America declared this to be a national monument in 2009.
- Pollution is not insulated here as well, with researchers finding candy wrappers and a plastic bag. The site has also been considered as a nuclear waste dumping site but is precarious and hence has not been implemented.
- Unlike assumptions, life does exist at the bottom, as the existence of a certain flatfish and shrimp was observed by oceanographers and divers. The first attempt at reaching this was made in 1960, with less than 10 in total.
- The first manned attempt had Jacques Piccard and Don Walsh, in a US Navy bathyscaphe made by the Italian and Swiss. Even the Canadian film director, James Cameroon has done this in 2012
The latest expedition was Chinese on 10th November 2020.

Therefore, The right answer is Option D.

Note: Outside of naturally occurring places, there is a scientific project in Russia called the Kola Superdeep Borehole which is actually the deepest point at 40, 230 feet. Just 9 inches wide, drilling here was stopped in 1992 when an inexplicable rumbling was heard.