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: I come to the United States ten year ago. I would always say that I was trying to study, but there were always things like work and my kids that would not allow me to start. Now I realized that those were only excuses. What stopped me was that I was afraid to start studying again. I always believed I would learn by myself. One day, however, my son told me that he was sad because his friends would come over and I didn't understand them because I didn't speak English. He was also sad because I could never help him with his homework. That same day, I told myself, "Rocio, you have to start believing in yourself and you will see you can make it." The next day, I went downtown to look for a big banner in front of the school which said that they offered classes for adults. I came in to see if I could join, but the classes were closed already. That night I took the kids to the movies, and on the way back, I told them we would take a new route. I ended up getting lost. That's the way I found Chaffey College. The following Monday, I went to ask for information. They told me that summer school was starting that week. That's how I started studying English last summer. It is difficult, but I have had great rewards. My daughter had to write a story for school. It was about the female they most admired and why . She wrote that I was the person she most admired because I had started going to College. I will never forget this.
Question: According to the passage, the author probably is a _ .
Options: (A) teacher (B) doctor (C) father (D) mother
D

Article: Wal-Mart is not just the world's largest retailer . It's the world's largest company, which sells in three months what number-two retailer Home Depot sells in a year. Wal-Mart exercises its power for just one purpose: to bring the lowest possible prices to its customers. At Wal-Mart, that goal is never reached. The retailer has a clear policy for suppliers: On basic products that don't change, the price Wal-Mart will pay, and will charge shoppers, must drop year after year. But what almost no one outside the world of Wal-Mart and none of its 21,000 suppliers know is the high cost of those low prices. To survive in the face of its pricing demands, makers of everything from bikes to jeans have had to close US plants in favor of obtaining products from abroad. Indeed, the real story of Wal-Mart, the story that never gets told, is the story of the pressure the biggest retailer constantly applies to its suppliers in the name of bringing us "every day low prices". The giant retailer' s low prices often come with a high cost. Wal-Mart' s pressure can crush the companies it does business with and force them to send jobs overseas. Are we shopping our way straight to the unemployment line? Of course, US companies have been moving jobs offshore for decades, long before Wal-Mart was a retailing power. But there is no question that the chain is helping accelerate the loss of American jobs to low-wage countries such as Thailand. People ask, "How can it be bad for things to come into the US cheaply?" Sure, it's great to have bargains. But you can' t buy anything if you' re not employed. There is no question that Wal-Mart's drive to squeeze out cost has benefited consumers. By now, it is accepted wisdom that Wal-Mart makes the companies it does business with more efficient and focused. Wal-Mart itself is known for continuous improvement in its ability to handle, move, and track goods. It is legendary for forcing its suppliers to redesign everything from their packaging to their computer systems. It is also legendary for quite straightforwardly telling them what it will pay for their goods.
Question: How do suppliers meet the requirements of Wal-Mart?
Options: (A) To sell even more goods in three months. (B) To cut down the employment rate sharply. (C) To charge shoppers at a much higher price. (D) To run the business in a well-organized way.
D

Article: Have you ever stood side by side with an elephant and touched its ear or its long nose? A marvelous opportunity is offered here for you to experience working with these giant animals. The daily highlight is the walk from the elephant orphanage down to the river to bathe the elephants. Imaging what an amazing fun it is to watch an entire herd splashing around and rolling in the river just feet in front of you! This opportunity is available through a programme designed for visitors and volunteers to work in the world-famous government-run elephant orphanage in Pinnawela, Sri Lanka. The orphanage is regarded as one of the largest centers of its kind in the world, with one of the most successful captive breeding programmes for Asian elephants. Pinnawela Orphanage is situated in the hills of central Sri Lanka. It was established in 1975 by the Sir Lanka Wildlife Department. The orphanage's 24 acres are a home for the many baby elephants found in the jungle without their mothers. In most of these cases the mothers had either died or been killed. Baby elephants cared for by the orphanage are released into the wild when they reach a certain age. The volunteers' working hours are quite short so there is plenty of time to sightsee and explore. The volunteer work consists mainly of the day-to-day aspects of running the orphanage, rather than more specialized research-based work. The volunteers' main duties are cleaning the elephant homes in the morning (hard, muddy work!) and bathing some of the smaller elephants. Some elephants are overly large or have not been tamed or trained to a satisfactory level. However there are still enough opportunities to have full hands-on contact safely. While the mahouts are bathing the larger elephants, you will have a chance to relax by the river, chat with the mahouts and watch the elephants play and interact with humans and each other. It is an ly beautiful sight. Being around these serene animals in such a beautiful setting can have a very calming effect! If you are interested in such an experience, contact us for more information.
Question: How many main duties does the passage list for the volunteers?
Options: (A) Two. (B) Three. (C) Four. (D) Five.
A