Answer:
To be prepared for a damaging thunderstorm or tornado, it is important to understand the difference between a storm watch and a storm warning.
Step-by-step explanation:
This is the statement that best introduces an essay about the differences between storm watches and warnings. This is the best statement to introduce this topic due to the tone it employs and the intention of the author. The tone used in these lines is an explanatory one, as the author tries to tell us how important the difference between a storm watch and a storm warning is. It also intends to introduce this important topic to the reader, and explain what the rest of the essay will talk about.