TASK DEFINITION: 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.
PROBLEM: Article: Researchers in over 80 nations are taking part in a project to conduct a decade-long census of sea life. Scientists presented some of their findings at a recent conference as the project neared its completion. In deep icy waters under Antarctica, scientists found bulbous tunicates, an underground animal, and many newly-discovered creatures believed to be related to starfish and other marine creatures. Elsewhere in the world's oceans, they have recently discovered many kinds of underwater life forms new to science. It is all part of a research effort called the Census of Marine Life. "There are about 2,000 scientists worldwide involved," said Bob Gagosian, President, CEO of the Consortium for Ocean Leadership. Gagosian helps manage the project. "Everywhere they've gone they've found new things," he says. "The ocean basically is unexplored from the point of view of marine living things." Researchers have placed small markers on hundreds of fish and marine animals to track by satellite their migration routes and to discover places where sea life gathers. According to Ron O'Dor, a senior scientist with the Census of Marine Life, knowledge of life on the ocean floor is especially limited. "90% of all the information we have is from the top hundred meters of the ocean," O'Dor states. And he says the sea floor is, on average, at a depth of 4, 000 meters. And so, as some machines dive far below what people have previously seen, scientists are discovering new species of plants, animals and living things. Since the census project began, more than 5,300 new marine animals have been found. Ocean researchers say they hope to catalogue 230,000 species during the census --which some say is only a small part of all the creatures living in the sea.
Question: Why do the researchers place small markers on many marine creatures?
Options: (A) To catch them. (B) To research them. (C) To kill them. (D) To protect them.

SOLUTION: B

PROBLEM: Article: In many romantic movies or TV shows one scene always appears. It involves a handsome man standing outside a young woman's window, singing a love song to her to win her over. However, trying to woo a female with songs is not just something that humans do. A few animals sing love songs as well. Birds and elephants are romantic but the latest animal to _ a female might surprise you--it is the humble mouse. You may find it odd to find out that mice sing. We do not hear them because the frequency of their voice is so high. In fact, scientists have known for some time that male mice make special sounds to females, but it has always been assumed that the sounds are produced instinctively and randomly, with little thought going into the process. But new research suggests otherwise. When male mice with different voices were put in a cage together, scientists found that they would gradually change their pitches to sound like one another. But when a female mouse was put in the cage with two males, one male would change his pitch to match the other. "It was usually the smaller animal changing the pitch to match the larger animal," professor Erich Jarvis, leader of the study, from Duke University, US, told BBC News. This ability, known as vocal learning, is rare in the natural world. It had been thought to be limited to some birds, such as parrots--as well as whales and dolphins. The latest findings challenge the long-held opinion that mice cannot learn to adapt their voices. Scientists also found the part of the brain that controls the mice's singing ability. In the experiment, they damaged the cells in this part of the mice's brain and found that the animals couldn't keep their songs in pitch or repeat them any more. This also happened when the mice became deaf. Jarvis said that this finding had changed his understanding of the way mice make sound. "In mice we find that the pathways that are at least modulating these vocalizations are in the forebrain, in places where you actually find them in humans," he said. "If we're not wrong, these findings will be a big boost to scientists studying diseases like autism and anxiety disorders."
Question: Which of the following is proven wrong by the latest discovery?
Options: (A) The frequency of mice's voice is so high that it's impossible for humans to hear it. (B) When male mice make special sounds to females they can't control the sounds. (C) Birds and elephants are both romantic animals that are good at expressing love. (D) Animals like mice are smart even though they often make sounds randomly.

SOLUTION: B

PROBLEM: Article: My father was Chief engineer of merchant ship, which was sunk in Word War II. The book Night of the U-boats told the story. Memories In September, 1940, my mother, sister and I went to Swansea, where my father's ship was getting ready to sail. We brought him a family photograph to be kept with him at all times and keep him safe. Then I remember my mother lying face down, sobbing. She had heard from a friend that the ship had been sunk by a torpedo . I can remember the arrival of the telegram , which in those days always brought had news. My grandmother opened it. It read, "Safe, Love Ted." My most vivid memory is being woken and brought down to sit on my father's knee, his arm in a bandage. He was judged unfit to return to sea and took a shore job in Glasgow for the rest of the war. For as long as I can remember, he had a weak heart. Mother said _ was caused by the torpedoes. He said it was because of the cigarettes. Whichever, he died suddenly in his early 50s. Ten years later I read Night of the U-boats and was able to complete the story. Torpedo One torpedo struck the ship. Father was in the engine room, where the third engineer was killed. He shut down the engines to slow the ship making it easier for it to be abandoned. By the time he got on deck he was alone. Every lifeboat was gone except one which had stuck fast. When he tried to cut it free, it swung against the ship, injuring his hand and arm. He had no choice but to jump -- still with the photograph in his pocket. Three days later, he and other survivors were safe in Glasgow. All 23 with him signed the back of the photograph. A Toast In my room is the book and the photograph. Often, glass in hand, I have wondered how I would have dealt with an explosion, a sinking ship, a jump into a vast ocean and a wait for rescue? Lest we forget, I have some more whisky and toast the heroes of the war.
Question: We can infer that the mother and children went to Swansea _ .
Options: (A) to meet a friend (B) to see the father off (C) to take a family photo (D) to enjoy the sailing of the ship

SOLUTION:
B