Sample Response: Muir's argument is the stronger one. The words he uses create a concerned but hopeful tone. This tone, combined with strong emotional, ethical, and logical appeals, helps him achieve his purpose.
This is the sample answer but if you want to write your own then here is what you will need to get a good answer...
1) a statement telling which text was more effective
2) details about word choice and tone
3) details about structure and purpose
I hope this helps and you have a wonderful day ^-^
