The answer on E2020 is
C. Orwell’s purpose is to persuade his readers to use simple language in political writing. He achieves this by suggesting steps writers can take to choose their words carefully.
(I just took the Quiz)
It means that everything that looks promising or precious is not necessarily so.
The number of unknown words
" She" is the Subject of the sentence, because they were talking about her.
Hope this helps :-)
