Do you have any question? If so please make sure you explain your question, so that we could answer :)
The author's attitude is the tone. This sets up mood, which is the reader's feelings toward the text. I often teach these together because they can be so confusing. Syntax is just the arrangement of words, which is often seen in poetry as this is where it is most effective. Diction is simply the choice of words, which is part of tone but not the full definition of tone. C is the correct answer.
It would be both the parents and the doctors. The schools are the ones who had the machines installed in the first place and the students are the ones who take the most kick out of it.
Doctors, as we know, are experts in health and living conditions, which means that they know it’s a health risk for those who tend to consume sodas more often then they should.
Parents only want the best for their children and soda/pop are considered bad for the digestive system if consumed in massive amounts. Because parents don’t have complete control on their children at school, the freedom of course the child has gets exploited.
Hope this helped!