Which of the following are formed due to collision of continental plates? 1. The Alps 2. The Himalayas 3. The Rockies 4. The Caucases mountains

Answer: Option C

The Alps, the Himalayas, and the Caucasus Mountains are all formed due to the collision of continental plates, a process known as orogeny.

The Alps were formed by the collision between the African Plate and the Eurasian Plate, resulting in the uplift of these mountains in Europe.

The Himalayas arose from the collision of the Indian Plate with the Eurasian Plate, creating the highest mountain range in the world.

The Caucasus Mountains were formed due to the collision between the Arabian Plate and the Eurasian Plate, located between the Black Sea and the Caspian Sea.

The Rockies, however, were primarily formed by a different process involving the subduction of the Pacific Plate beneath the North American Plate, not a direct continent-continent collision. Thus, they do not fit the criteria of this question.

Therefore, the correct answer is Option C: 1, 2 and 4, as these mountain ranges are directly linked to continental plate collisions.