A thesis statement you just have to state purpose for what you are writing so I guess they can help but I wouldn't rely on them you'd focus that more on the body paragraphs then the thesis
The mood is the atmosphere of the story, and the tone is the author's attitude towards the topic. We can identify both by looking at the setting, characters, details, and word choices.
hope this helps :)
The answer is c, “ stir up emotions about the lives lost in the war and encourage The listener to help end it”. Hope this helped!!!