Q: What is used to classify tornadoes?


Read this paragraph and choose the correct option from the provided answers:

The winds of a tornado can reach very high speeds. The faster the winds blow, the greater the damage they cause. Wind speed and damage are used to classify tornadoes. Table below shows how.

 Choices:

- seismograph

- damage, snowfall

- humidity, rain

- wind speed, damage


A:
wind speed, damage