The Pyrenees mountains are a mountain range located in the north of the Iberian Peninsula. It is a mountain range that serves as a natural border between France and Spain and whose highest point is the Aneto peak at 3,404 meters above sea level. This mountain range has a length of about 430 kilometers. This chain covers the Spanish autonomous communities of Catalonia, Aragon, Navarra, and the Basque Country and in the French regions it covers Occitania and New Aquitaine. Also on its surface is the Principality of Andorra, a small independent and sovereign country. So, the correct answer is C. Pyrenees.
