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.
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Question: Article: Certainly no creature in the sea is stranger than the common sea cucumber . All living creatures, especially human beings, have their features, but everything about the little sea cucumber seems unusual. What else can be said about an unusual animal that eats mud, feeds almost continuously day and night but can live without eating for long periods, and can be poisonous but is considered eatable? For some fifty million years, in spite of all its strange features, the sea cucumber has lived on its diet of mud. It is adaptable enough to live attached to rocks by its tube feet, under rocks in shallow water, or on the surface of mud flats. Common in cool water on both Atlantic and Pacific shores, it has the ability to suck up mud or sand and digest whatever nutrients are present. Sea cucumbers come in a variety of color1s, ranging from black to reddish-brown to sand-color1 and nearly white. One form even has brilliant purple tentacles . Usually the creature are cucumber-shaped--where their name comes from--and because they live in rocks, this shape, combined with flexibility, enables them to press into crevices where they are safe from animal eater and ocean currents. Although they have greedy desire for food, eating day and night, sea cucumbers have the ability to become still and live at a low metabolic rate--feeding a little or not at all for long periods, so that the living things in the ocean that provide their food have a chance to increase by a large amount. If it were not for this natural ability, they would swallow all the food available in a short time and would probably starve themselves out of existence. But the most impressive thing about the sea cucumber is the way it defends itself. Its major enemies are fish and crabs. When attacked, it forces all its internal organs in its body out into water. It also removes attached structures such as tentacles. The sea cucumber will get rid of its organs and grow itself again if it is attacked or even touched; it will do the same if the surrounding water temperature is too high or if the water becomes too polluted.
Question: According to the passage, why is the shape of sea cucumbers important?
Options: (A) It helps them to protect themselves from danger. (B) It makes it easier for them to move through the mud. (C) It makes them attractive to fish. (D) It helps them to digest their food.

Answer: A

Question: Article: A survey reveals that employees in China say they are not engaged in their jobs. Judging by the survey data, many Chinese workplaces are black holes of misery and despair. Only 6% of Chinese employees said they are "engaged" in their jobs, according to a global Gallup survey released this month. China's numbers equal the numbers out of war-weary Iraq. Workers across all income levels and industries were surveyed by Gallup in China, defined by Gallup to mean they were "psychologically committed to their jobs and likely to be making positive contributions to their organizations". Out of 94 countries polled, only six countries scored lower rates of job engagement than China, including Tunisia, Israel and Syria. Unsurprisingly, 0% of Syrians admitted to being engaged at work. In a related survey, China ranked near the bottom in a poll measuring job satisfaction among 22 Asian countries. Only 49% of Chinese respondents said they were happy in their jobs. Part of the problem, I suspect, is that very few in China have the _ to pursue a career that truly interests them. Even university graduates often feel they have no choice but to choose the positions with the government or state-run enterprises, since those jobs are thought to be stable. That makes those who are happy at work in China a rare find indeed.
Question: According to the author, why most Chinese dislike their jobs?
Options: (A) Because they don't take the jobs they really like (B) Because many Chinese workplaces are full of misery and despair. (C) Because they have no choice but to choose the stable jobs. (D) Because they are not psychologically committed to their jobs.

Answer: A

Question: Article: Light for the City Edison and his assistants came to New York to set up an electric power system. They hoped it would provide enough electricity to light up a part of the great city. They bought several machines with them. These were called generators , which produced electricity power for lamps in Edison's building. Soon there were lights for the building. Edison lived in a room facing the street and he often worked over night. The light burned brightly and steadily and he often worked over night. People often came and stopped their horse-drawn carriage to look. Everyone knew that Thomas Edison was in town. First, the inventor and his assistants produced several large generators. A great deal of power would be needed to light up even a small part of the city. Then the workers were busy digging deep trenches in the hard earth below the city streets, and Edison had fourteen miles of wire laid into the trenches. The wire connected each building to a generator. Setting up an electric power system was not an easy job. It took a year and a half. In September, 1882, the job was finished. A small group of men stood around Edison inside the power house. The big moment came at last. The inventor, taking a deep breath, pulled a switch. The electric lights flashed up. "Very good! Very good!" a man nearby shouted to praise Edison for what he had done. "Sir," said Edison, "this is only the beginning!" And Edison was right. Soon Edison's lamp were lighting up cities all over the world.
Question: The generators they brought with them could produce as much as electricity as _ needed.
Options: (A) Edison's building (B) a small part of the city (C) the whole city (D) the world

Answer:
A