Explanation:

• Alps The Alps are a significant mountain range in Europe, stretching across several countries, including France, Switzerland, Italy, Austria, and others. o They are primarily an example of fold mountains. The formation of the Alps is associated with the collision of the African and Eurasian tectonic plates, resulting in the folding and uplift of rock layers. • Andes: The Andes is the longest continental mountain range in the world, running along the western edge of South America, passing through countries like Peru, Chile, Ecuador, and others. o The Andes are primarily a result of the subduction of the Nazca Plate beneath the South American Plate. o While the Andes do involve volcanic activity due to this subduction, they are considered to be an example of fold mountains because of the extensive folding and uplifting of rock layers caused by the plate tectonics. • The Sierra Nevada is a mountain range located in the western United States, primarily in California and Nevada. o The Sierra Nevada is not classified as fold mountains. Instead, it is an example of fault-block mountains. The range was formed by the movement along fault lines, resulting in blocks of the Earth's crust being uplifted and tilted. • The Appalachian Mountains, often referred to as the Appalachians, are indeed old fold mountains. They are one of the oldest mountain ranges in the world and are located in eastern North America, stretching from the Canadian province of Newfoundland and Labrador in the north to the U.S. state of Alabama in the south. • Important Mountain Ranges of the World o Andes: Pass through several South American countries, including Peru, Bolivia, Chile, Ecuador, and Colombia. o Rocky Mountains: Pass through the United States and Canada. o Ural Mountains: Pass through Russia and Kazakhstan. o Atlas Mountains: Located in North Africa, passing through Morocco, Algeria, and Tunisia. o Caucasus Mountains: Pass through Russia, Georgia, Armenia, and Azerbaijan. o Great Dividing Range -Australia • Hence option (c) is the correct answer.