Which of the following is not a young fold mountain?

Correct answer: (d) More than one of the above

Explanation

Fold mountains are those mountains which are formed as a result of folding in the upper parts of the Earth’s crust. These are of two types—young fold mountains and old fold mountains. Young fold mountains include the Himalayas, the Alps, etc., whereas old fold mountains include the Aravalli (India), the Appalachian (North America) and the Ural Mountains (Russia), etc.