In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.

Article: (NEW YORK)---Scientists have discovered small signs of awareness in some vegetative brain injury patients and have even communicated with one of them---findings that are beneficial to how to assess and care for such people. The new research suggests that standard tests may ignore patients who have some consciousness, and that someday some kind of communication may be possible. In the strongest example, a 29-year-old patient was able to answer yes-or-no questions by picturing specific scenes the doctors asked him to imagine. "We were stunned when this happened," said one study author, Martin Monti of the Brain Sciences Unit in Cambridge. "I find it really amazing. This was a patient who was believed to be vegetative for five years." Ever since a research paper four years ago described obvious signs of awareness in a vegetative patient, families of patients have been demanding brain scans, said Dr. James Bernat, a spokesman for the American Academy for Neurology. But experts said more study is needed before the specialized brain scans could be used in medical treatment. "It's still a research tool," Bernat said. Experts also pointed out that only a few tested patients showed evidence of awareness. And they said it is not clear what degree of consciousness and mental abilities the signs imply. They also noted that the positive signals appeared only in people with traumatic brain injury---not in patients whose brains had been lacking in oxygen, as can happen when the heart stops. The new study used brain scanning called functional MRI, for 23 patients in a vegetative state and 31 that are minimally conscious. Patients are said to be in a vegetative state if they are tested and found unable to do such things as move on command or follow a moving object with their eyes. Minimally conscious patients show signs of awareness, but they are minimal and discontinuous.
Question: What is the practical use of the research?
Options: (A) It leads to studying how to cure vegetative patients. (B) It attracts society to pay more attention to vegetative patients. (C) It helps doctors know whether patients are vegetative or not. (D) It drives the government to care about vegetative patients.
C

Article: We have only one earth.In a world with limited land, water and other natural resources, the harm from the traditional business model is on the rise.Actually, the past decades has seen more and more forests disappearing and globe becoming increasingly warm.People now realize that this unhealthy situation must be changed, and that we must be able to develop in sustainable ways.That means growth with low carbon or development of sustainable products.In other words, we should keep the earth healthy while using its supply of natural resources. Today, sustainable development is a proper trend in many countries.According to a recent study, the global market for low-carbon energy will become three times bigger over the next decades.China, for example, has set its mind on leading that market, hoping to seize chances in the new round of the global energy revolution.It is how trying hard to make full use of wind and solar energy, and is spending a huge amount of money making electric cars and high-speed trains.In addition, we are also seeing great growth in the global markets for sustainable products such as palm oil , which is produced without cutting down valuable rainforest.In recent years the markets for sustainable products have grown by more than 50%. Governments can fully develop the potential of these new markets.First, they can set high targets for reducing carbon emissions and targets for saving and reusing energy.Besides, stronger arrangement of public resources like forests can also help to speed up the development.Finally, governments can avoid the huge expenses that are taking us in the wrong direction, and redirecting some of those expenses can accelerate the change from traditional model to a sustainable one. The major challenge of this century is to find ways to meet the needs of growing population within the limits of this single planet.That is no small task, but it offers new chances for sustainable product industries.
Question: The traditional business model is harmful because of all the following EXCEPT that _ .
Options: (A) It makes the world warmer (B) it consumes natural resources (C) it brings severe damage to forests (D) it makes growth hard to continue
B

Article: Rob Kalin learned the secret to success while he was still in his baby bed. At age one, the Boston-bom teacher's son dragged around a stuffed rabbit that had been lovingly sewn by one of his mother's students. True, one of the ears was sewn on backward, but that just added to its magic. "It was always special to me," Kalin remembers of his first handmade craft . Kalin's appreciation for the simple and the simply eccentric inspired him to create etsy. com, an online craft fair, probably the largest market for handmade goods in the world. Last year, 350,000 woodworkers and other craftsmen sold their one-of-a-kind crafts on the four-year-old site. They sell everything from hand-knit sleeves for Macbooks ($32) to myrtle-wood electric guitars ($3,200). And in an age of chain stores, it seems there's still a big market. More than three million consumers in 150 countries purchased about $87.5 million worth of crafts on Etsy last year. Emily Worden, founder of Elemental Threads, a custom handbag and jewelry company, signed up with Etsy when she started her company two years ago. She pays Etsy a 20-cent standard fee for each item she lists on the site, plus a 3.5 percent commission on everything sold. Etsy allows her to track the number of times customers click on a particular item to view it. "We can see that our necklaces are a popularly viewed item and which color1s and sizes get the most views," she says. "That is a guide to evolving our product lines." Today, Etsy's staff has ballooned to 70 employees, and the company reportedly earns more than $12 million a year. Kalin's father was a carpenter and taught him early on how to use his hands. Indeed, in high school, he put his skills to work -- developing the photos of his classmates and handcrafting a graduate ID to attend design classes. Eventually, he was admitted to New York University, studying classics and working as a carpenter. Kalin has also started sewing some of his own clothes. "I have to make something physical at least once a month," says Kalin, "or I go crazy."
Question: What do we know about the crafts sold on etsy.com?
Options: (A) They are cheap. (B) They are unique. (C) They are made by famous craftsmen. (D) They are designed for young artists.
B