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.

[EX Q]: Article: During the 1800s, African Americans worked long days in the fields of the American South.To ease their labor, they sang "field hollers" that they had brought from Africa.One person sang a line.Then a group of workers repeated it.The songs' words told of the hardships that people suffered.African Americans sang "shout spirituals", or joyous religious songs.They clapped their hands and stomped their feet to the music. After the Civil War, the music changed dramatically.African American music, from ballads to church music, took new forms.It also adapted dance music, called "jump-ups".which had great rhythm. Banjos became popular.A blues singer usually played a call and response with the banjo.By the early 1900s, the guitar had replaced the banjo as the main blues instrument. Northern Mississippi - called the Delta - was the center of the blues tradition.By the 1920s, the Delta had many clubs, so-called juke joints.African Americans listened and danced to music in these clubs.Some of the greatest blues men and women performed there. Blues have a soulful sound that is easy to recognize.The musical notes are often "bent".That is, they are changed slightly to give a song more strength.Whatever their origin, these bent notes most often define the blues. Lyrics are the words of a song.Blues lyrics describe everyday life.The lyrics, often about relationships between men and women, are often very intense and personal.They tell about sorrow and overwork.They tell about finding or losing love, having money or being broke, being happy or sad and lonely.The lyrics may use humor to describe life's trials and joys.They almost always use the rhythms of everyday speech.A typical blues stanza, or group of lyrics, has three lines.The second line repeats the first line.The third line has different words. By the 1940s, large numbers of African Americans had left the Delta and moved north to work. Many settled in Chicago.There, a new kind of "electric", or "Chicago" blues began.Many of its themes were the same, but these blues had "wailing" electric guitars and harmonicas.The music had a steady, strong drumbeat.The loud, driving Chicago blues was excellent dance music.Chicago blues led to the birth of a new music style-rock and roll.
Question: The "field holler" is a kind of music that came from _ .
Options: (A) the American South. (B) Africa. (C) Chicago. (D) Asia.
[EX A]: B

[EX Q]: Article: After my brother died in an accident, my mother was in deep sadness. I was only a four-year-old girl at the time, but I still understood the sudden shift in my mom's attitude towards safety. Suddenly everything around us was potentially dangerous. Overnight, the world had gone from a playground to a dangerous zone. I grew up with a lot of limits and rules. I couldn't walk home from school by myself, even though everyone I knew already did. I couldn't go to summer camp because what if something happened to me? As I got older, the list of things of fear got longer. My whole life was divided into "things you should avoid", and "things you needed to do in order to have a good, long life." I became a natural worrier. I worry about things like getting cancer, losing my wallet, car accidents, earthquakes, and losing my job -- disasters big and small, real and imagined. The funny part is that you'd never know it by looking at my life. In fact, I've developed a rule for myself: If it scares me, then I have to do it at least once. I've done lots of things that my mom would have worried about: I've ridden a motorcycle; I've traveled --a lot. I've performed stand-up comedy, and I'm planning my second wedding. There's something else I don't usually talk about, but it's a cornerstone in my belief: When I was 14, my mother died suddenly in a car accident. At my mom's funeral I remember making a choice. I could either live out the rest of my life trying to be "safe" or I could be brave enough to live out a fulfilling, exciting and, yes, sometimes dangerous life. I worry that I may have betrayed my mother by writing her in this light, but she has been a driving force in my life and, in the end I think she would have been proud of me. Courage isn't a natural character of human beings. I believe that using courage is like developing a muscle. The more often I do things that scare me or that make me uncomfortable, the more I realize that I can do a lot more than I originally thought I could do. Even though I inherited my mother's cautious nature. I've also come to believe that fear can be a good thing, if we face it. Believing that has made my world a less scary place.
Question: In the writer's childhood, the limits and rules were used to _ .
Options: (A) improve her behavior (B) develop her independence (C) be in memory of her dead brother (D) protect her from possible danger
[EX A]: D

[EX Q]: Article: Millions of young people are writing blogs . Millions of others are reading them. The word "blog" is a short way of saying Web log. Many popular Web sites now offer free, easy ways to create personal Web pages and fill them with writings and pictures. Web sites called "Face book" and "My Space" are some of the most popular blog sites for young people. Blogs offer young people a place to show their writings and feelings. They can also be helpful to connect young people with others. But blogs can become dangerous when they are read on the Internet by millions of people all over the world. Recent studies show that young people often tell their names, age and where they live on the Internet. That may not be safe for them. This personal information puts them in danger when found out by dangerous people who want to hurt them. Students can also get into trouble when they put information about others on their blogs. As a result, many schools don't allow using blogging web sites on school computers. Many schools have also begun teaching parents about the web sites. Parents should know what their children are doing online and should read their blogs to make sure they are not giving out personal information. One way to keep away from these problems is to use programs so that blogs can be read by "friends only." people can read the website only if they know a secret word chosen by the blogger.
Question: "Face book" and "My Space" are _ .
Options: (A) school subjects (B) computer programs (C) school online BBS (D) blog sites for young people
[EX A]:
D