You are presented with the question "Cold fronts can give birth to what?" and the following answer choices: 
- rays or beams
 - heat energy
 - warm weather
 - high pressure
 - fur and fat
 - influenza
 - tornadoes
 - rising tides

Now knowing that cold fronts cause thunderstorms as they pass by and thunderstorms Thunderstorms give birth to tornadoes, choose the best answer.


 

       tornadoes  