The largest mountain series of the World is –

Explanation

Among the given options, the Andes is the major mountain range of South America and the world’s longest continental mountain range. This range lies along the western coast of South America. Its length is considered to be about 7,000 km to 8,900 km as per different authoritative sources. Note that the longest mountain range on Earth is the Mid-Ocean Ridge (about 65,000 km).