A portion of landmass from the shore line up to the shelf break that is submerged under shallow water is known as:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Continental Shelf.
The Continental Shelf is the portion of a landmass that extends from the shoreline and is submerged under relatively shallow ocean water, continuing up to the shelf break, where the sea floor begins to slope steeply downward. It is considered an underwater extension of the continent and is usually rich in marine resources, including minerals, oil, natural gas, and diverse marine life. The continental shelf plays a crucial role in marine ecosystems and fishing industries. It is also of strategic importance for coastal nations, which often claim exclusive rights to explore and exploit resources within their continental shelves under international law.
Other options:
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Trenches: Deep, narrow depressions in the ocean floor, often at tectonic boundaries.
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Oceanic Basin: The deep area of the ocean floor beyond the continental shelf.
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Continental Drift: A geological theory describing the movement of continents over time.