Which states are part of the Mountain Plains Region?

The Mountain Plains Region primarily encompasses a mix of states noted for their geographical and cultural features, including elements of the Rocky Mountains and Great Plains. The correct selection includes Nebraska, Texas, Oklahoma, and Wyoming, as these states are all situated within this region based on their geographical location and economic similarities.

Nebraska provides a central point within this region, while Texas and Oklahoma contribute significant representation from a mixture of the Southern Plains and Southwestern characteristics. Wyoming, with its prominent mountainous terrains, rounds out the group, highlighting the blend of both plains and mountain landscapes that define the Mountain Plains Region.

In contrast, the other options include combinations of states that do not align with the geographical definition of the Mountain Plains Region. For instance, Arizona and Oregon are typically associated with the Southwestern and Pacific regions, respectively, while states like South Carolina are situated much further east and south, steering them away from the Mountain Plains region's composition.