The answer is D.hope this helps
<span>adding statistics about economic power
This author makes their opinion clear, and supports that claim (that Roosevelt was the greatest president) by giving examples of things that he did. In order to improve their argument though, they should add actual statistics about what Roosevelt did. Using statistics would prove their point that these things actually worked and improved the economy.</span>
I think the most grammatically correct answer is actually B. Correct me if I am wrong.
It tells the audience what will happen at the end of the play.
1. should
2. ought to
3. can
4. must
5. have to
6. may
I am like 95% sure these are the answers. Hope this helps! :)