B is the best answer. It gives the reader the context of the quote by stating the speaker and what is happening. It also has the quote which is more credible than just a word or two pulled out. Since it's just introducing this information, it also allows the writer of the essay to expand the idea with further explanation.
A Adverbial clause is the answer to the Question
He wants his listeners to ponder is to struggle against tyranny, disease, war, and poverty. He summons everybody to participate and join in this goal.
The Tellson’s Bank located in Temple Bar, is an small, and you can say ugly, building with a traditional structure, the employees are all men and very conservative, they are against the change they enjoy the authentic condition. The bank likes to be antiquated as England and this make it pride itself on.
Don't mind Martin; he just likes to play devil's advocate, shows that Martin wants to provoke discussion.
The idiom “he just likes to play devil's advocate” is a Latin translation of ‘advocatus diaboli’ , refers to attack an argument even one is in favor of it in order to testify the validity of the proposition or to examine it’s strength.
