Answer the following question given this paragraph: 

Severe thunderstorms have a lot of energy and strong winds. This allows them to produce tornadoes. A tornado is a funnel-shaped cloud of whirling high winds. You can see a tornado in Figure below . The funnel moves along the ground, destroying everything in its path. As it moves it loses energy. Before this happens it may have gone up to 25 kilometers (16 miles). Fortunately, tornadoes are narrow. They may be only 150 meters (500 feet) wide.


Q: What is a funnel-shaped cloud of whirling high winds known as?

 Choices:

- volcano

- tsunami

- hurricane

- tornado

A:
tornado
