Read the text and choose one correct answer .
2. Many mountains and hills in the West are dead volcanoes. In Arizona there are thousands of them, separated from one another on the otherwise flat land. There are also volcanoes in the West that are not dead but are sleeping. Who knows when one might blow apart or shoot rock and ashes into the air? Not long ago, the entire side of Mount Saint Helens was blown away - rock and soil were thrown into the air, and forests were blown flat.
A. This story is mostly about -
1. Mount Saint Helens.
2. volcanoes.
3. volcanoes in the West.
4. dead volcanoes.