Wikipedia says that the largest major plate is the Pacific, and that the smallest minor plate is Juan de Fuca. So that must be the correct answer after all.
In relation to the Andes mountain, the Atacama desert is located to the west. It actually lies between the pacific ocean and the Andes mountain. The Atacama desert is one of the driest place on earth. It is a rainless pleatue located in Southern America. The Atacama desert covers almost a 1000 kilometers. The desert mainly consists of salt lakes, rocks and sand. This is a place where rain occurred numerous years ago and so it is considered a totally rainless place. There is every probability that the Atacama desert is the oldest desert present in the earth.
