Final answer:
Texas is the state that boasts both the Sam Rayburn Reservoir, its largest lake, and Lake Texoma, which borders Oklahoma.
Step-by-step explanation:
The state that has Sam Rayburn Reservoir, the largest lake in the state, and Lake Texoma, on the border with Oklahoma, is Texas. The Sam Rayburn Reservoir is located in east Texas and is a popular location for fishing and recreational activities. Lake Texoma is situated on the Red River and is formed by the Denison Dam. It is known for its striped bass fishing and is shared between Texas and Oklahoma, contributing to a diverse ecosystem and multiple recreational opportunities for residents and visitors alike.