Answer:
For the first time in history, more people live in cities than rural areas. Every year millions of people leave their homes in the countryside and migrate towards urban centres both within their own countries and across borders. Some of these people move simply to seek new opportunities and improve their lives.
Answer D is the best example of imagery through onomatopoeia.In this description, the reader can easily imagine the fire's appearance and sound.
It might be stated that Mill employed a combination of formal and informal tone in "On liberty..", by developing some complex ideas, meanings and expressions. The author used metaphors and figurative languages to appeal to the audience. It might be added that Mill wrote those who agreed with him and he discussed his thesis by attacking the conservatives.
He used frases such as <span> "no one's idea," "no one should assert," "it would be absurd," "nobody denies" . </span>