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.

The Great Basin is the largest desert region in the United States and extends across parts of six states. Death Valley is in this broad western desert region, so the best answer is the Great Basin. The Great Plains and Coastal Plains are different landform regions, and the Grand Canyon is a canyon rather than a region covering six states.

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