Final answer:
Mississippi is the state that has both Ross Barnett Reservoir and Arkabutla Lake, which are popular recreational areas.
Step-by-step explanation:
The state that has both Ross Barnett Reservoir and Arkabutla Lake is Mississippi. The Ross Barnett Reservoir is located on the Pearl River and is named after Ross Barnett, a former governor of Mississippi. It is a popular spot for outdoor activities including fishing, boating, and camping. Arkabutla Lake, on the other hand, is located in the northern part of the state and is managed by the U.S. Army Corps of Engineers. It's also a recreational area known for water activities and fishing.