instruction:
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.
question:
Article: The red crab lives on Christmas Island in the Indian Ocean and has been found nowhere else in the world. But on its homeland it is a very significant species -- some 120 million individuals cover the rain forest floor and play a major role in determining the structure of the ecosystem. These large crabs are active during the day but prefer to stay in the shade and can die in the heat of direct sunlight. They feed on fallen leaves, seeds, fruits and flowers, recycling nutrients and helping to determine the spread and composition of native plants. Most of the year the red crabs live in the holes they dig throughout the forest. During the dry season they hide in these shelters to keep their body wet and remain there for two to three months. But when wet season returns in October or November they begin a legendary mass migration to their seaside breeding grounds, moving in color1ful wave that wash over all obstacles like roads (including special passages and some closed roads built for the red crab) and even seaside cliffs. The annual migration is also closely tied to the lunar schedule. The crabs arrive at the coast and breed at such a time that the females can produce eggs and develop them in caves for a dozen or so days before carrying them into the sea exactly when high tide turns between the last quarter and new moon. During this period sea level on the beaches varies the least and offers an easier approach, which is so important that if the weather delays the migration crabs will put off laying eggs until the next lunar month. Red crab eggs grow right away, and the young live in the sea for a month before returning to the coast, changing into air breathers, and slowly returning inland to begin the cycle once again.
Question: The red crab is a very significant species on its homeland because _ .
Options: (A) it's gradually dying out (B) it's not found anywhere else (C) it's well protected by the local people (D) its huge population affects its native ecosystem
answer:
D

question:
Article: A terrible competition is going on in England, with billions of dollars and hundreds of lives at risk. OK, that's not true. But competitors from around the world gathered on Thursday for the annual competition to compete for the world's biggest person who tells lies. Each participant is given up to five minutes to make up the best _ in the contest, which was founded in honor of 19th-century Bridge Inn landlord Will Ritson, who was reportedly famous for his lies. Competitors gather at the Bridge Inn every year for the competition, a small pub in northwestern England. Anyone but lawyers and politicians can take part in the competition. A study found that nearly all lies are detectable through visible facial muscle reactions in the person telling a lie. "Thus, while interpersonal cheat often is highly successful, signs of hidden emotional states are communicated clearly to the informed observer," the study concluded. A churchman of Carlisle reportedly holds what may be the greatest lie of all time in the competition, simply stating, "I have never told a lie in my life." In 2003, Abrie Krueger from South Africa became the first one to win the competition. In 2006, comedian Sue Perkins became the first female to win the competition, telling a tale about people riding camels to work as a result of climate change.
Question: Why does the author tell a lie at the beginning of the passage?
Options: (A) He likes telling lies. (B) He intends to talk about a contest. (C) Lies can be detected by someone. (D) Nearly everyone has told lies.
answer:
B

question:
Article: California, once regarded as a leader in the United States for its public higher education system, ranks next to the last in the U.S.for its number of adults with at least a high school diploma, according to the report, titled "California at the Edge of a Cliff," released by the California Faculty Association. Meanwhile, the state's investment in public higher education has dropped over the past three decades, and now ranks 22nd in the country.That's despite having the country's largest public higher education system, the report said. "It's a collapse ," said Thomas Mortenson, author of the report, who is an independent analyst living in Iowa and a senior scholar at the Pell Institute for the Study of Opportunity in Higher Education in Washington, D. C. "Ranking 49th out of 50 states is an indication that shows the quality of the state's educational has become much worse in recent decades." Mortenson said in the report.As of 2007, California ranked 14th in the United States in terms of college educated members of the workforce over 25 years of age, a drop from eighth place in 1981, the report showed. Mortenson said that California has never been the state of high status in education and economy while other states have made greater gains in building a college-educated workforce. The California Faculty Association is using the report's findings to criticize Governor Arnold Schwarzenegger's proposed funding cuts for education. Struggling with a 14.8-billion-dollar state budget deficit , Schwarzenegger has proposed a combination of sales tax increases, borrowing and major budget cuts, including cutting billions of dollars from the state's education budget.
Question: The passage is mainly about _ .
Options: (A) California's worse situation in higher education (B) the dangerous situation in California (C) California's research on education and economy (D) funding cuts for high education in California
answer:
A