This quote can be found only in the movie.
It can be heard in the third movie, and is told by the headmaster.
I just checked the book, and it doesn't appear there.
<span>It is cited correctly in case that we only have one work by Winston mentioned in our bibliography page. This way, we could turn to it and see the paper or the book and find it and on page 12 we would see the quote. If there were more papers by Winston used then you would also have to add the name of the paper or the book in the brackets.</span>
A. Since
it indicates an exhange or a reason
For anyone who still needs the answer it is ''conservation''
Paragraph 5, speaks about the importance of using social media.