The answer correct answer is b
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>
Sergei is an altruistic person. He had never used his wished for himself, but he had given his wish for others. He had wished that his sister would be cured of cancer, which was in a terminal stage. He had longed for a friend and had found one in Yoni.