The following characteristics describe which united states region?

i. it is the largest desert region in the united states.
ii. death valley is located in this region.
iii. this region covers six states.

a.
the great plains
b.
the great basin
c.
the coastal plains
d.
the grand canyon

Option (B)

Explanation:

The Great Basin refers to the large basin that is present towards the western part of the United States, covering six of its states. It forms a watershed that is located between the Rocky Mountains (on the eastern side) and the Sierra Nevada as well as Cascade Mountains (on the western side), thereby not allowing the water to flow toward the Pacific. It forms the largest desert that is present in the United State, covering an area of about 300000 square kilometres.

The Death Valley is present here, being one of the world's hottest place. This valley is characterized by the presence of large sand dunes.

Thus, the correct answer is option (B).

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