The correct states that are part of the Great Basin are Nevada, Utah, and portions of California, Oregon, Idaho, and Wyoming.

The Great Basin is an expansive geographic region in the western United States, known for its arid climate and unique landscapes. It includes parts of several states, but the primary ones are Nevada and Utah. Other states like California, Oregon, Idaho, and Wyoming have smaller portions of their land within the Great Basin. This region is defined by its endorheic nature, where water does not flow to the ocean, but rather accumulates in salt flats, desert lakes, or evaporates. The Great Basin is famous for its desert ecosystems and mountain ranges.