Answer: B) The Great Wave was inexpensive to purchase, costing about the same as a double helping of noodles. Since mass quantities could be produced and still look exquisite, it became highly profitable to sell.
Explanation: The tone of a text or sentence is the author's or speaker's attitude towards the audience, the subject or even the characters of the text. There are many different kinds of tones, like: positive, negative, objective, sad, angry, etc. From the given options, the one that revises the sentence to create a more formal style and tone is the corresponding to option B, we can know this by paying attention to the word choice, for example: "mass quantities," "exquisite," "profitable," etc, which make the sentence more formal.
