Answer:
Thomas Jefferson was the third president of the United States. - to inform
Hydro-Girl and the other superheroes battled the fierce sea monster. - to entertain
We should pass a new helmet law so bikers and pedestrians will be safer. - to persuade
Step-by-step explanation:
The purpose of the first statement is to inform. It teaches us new information, new facts. Thanks to this statement, we now know that Thomas Jefferson was the third president of the United States.
The purpose of the second statement is to entertain. It tells about a superhero story, about how Hydro-Girl and other superheroes battled a monster to save people. It entertains just like a movie or comic about superheroes, such as Marvel or DC superheroes, would entertain us.
The purpose of the third statement is to persuade. It gives us reasons why we or someone else should do something. A new helmet law is needed so bikers and pedestrians will be safer. It's a suggestion that could save lives, and someone should do something about that.