Final answer:
The Great Basin region between the eastern Sierra Nevada in California and the Wasatch Mountains in Utah slides horizontally in response to plate-tectonic forces. This region is part of the Basin and Range Province, characterized by extensional deformation and normal faults.
Step-by-step explanation:
The Great Basin region between the eastern Sierra Nevada in California and the Wasatch Mountains in Utah slides horizontally in response to plate-tectonic forces. This region is part of the Basin and Range Province, which is characterized by the presence of numerous horsts and grabens created by extensional deformation and normal faults. These faults allow the crust to slide horizontally, resulting in the unique topography of the Great Basin region.