The only region where the rivers are trapped and cannot flow to the sea is the

Columbia-Snake River Plateau region.
Columbia-Snake River Plateau region.

Rocky Mountain region.
Rocky Mountain region.

Basin and Range region.
Basin and Range region.

Colorado Plateau region.

1 answer

The only region where the rivers are trapped and cannot flow to the sea is the Basin and Range region. This area is characterized by interior drainage, meaning that many rivers do not reach the ocean but instead feed into low-lying basins, lakes, or evaporate.