Which of the following regions has what is considered the most rugged terrain in oklahoma? a. the wichita mountains b. the arbuckle mountains c. the sandstone hills d. the ouachita mountains

Answer

D. Ouachita Mountains; sandstone ridges

Explanation

The Ouachita Mountains are located in the southeastern parts of Oklahoma at the border of Oklahoma and Arkansas. The mountains are made of high sandstone ridges that form the most rugged land surface in Oklahoma. The Arbuckle mountains are currently worn down by erosion.