The right option is; c. toledo
Toledo city is next to the tajo river
The Tajo River is the longest river in the Iberian Peninsula. It rises in Spain from the Mediterranean coast, and empties into the Atlantic Ocean that is close to Lisbon. Toledo is the city that is next to the Tajo River. The river also flows through cities such as Aranjuez, Alcántara and Talavera de la Reina in Spain, and Lisbon, Abrantes, and Santarém in Portugal.