I'm not sure when this was posted but there has definitely been a lockdown!
The answer is b in my British accent
After Robert Fulton invented the steamboat, he tried it out on the Hudson River.
It depends on the story your writing for starters try using words that calculate to your grade
A flat character is a character who is 2 dimensional and does not change throughout the story/book. Hope this helped! Have a great day! :)