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: Nathan's second-hand bike was good enough to get him anywhere he wanted to go. Of course, it couldn't match Tim's in a normal speed race, but all the fancy gears in the world wouldn't get you up Black Mountain. It was so steep in places that you had to get off your bike and push. On this particular afternoon, the odds were all on Nathan's side. First, he was stronger. Tim had always been thin, but recently he'd started to grow so fast that his arms and legs were like pieces of spaghetti. As well as being considerably fitter than his friend, Nathan knew the shortcuts up prefix = st1 /BlackMountain. So when Nathan accepted the challenge, he was sure he'd win. He nearly always did, in competitions with Tim. That was what was strange. Tim was so competitive, and yet he wasn't any good at physical things. By the time the two boys were three quarters of the way to the top, Nathan was clearly ahead. While the road zigzagged back and forth up the mountainside, in certain places, there were also vertical tracks, where water rushing down the slope in winter had bitten erosion courses into the soil. These had in turn been so overgrown by bushes and long grass in the spring that they looked like tunnels through the bush. The trick was to know where you could cut off a whole bend in the road by leaving the road and pushing your bike up one of these half-hidden pathways. If you chose the wrong one you'd struggle up for ten minutes and then suddenly reach a dead end. Then there was no choice but to go back.
Question: What did Tim challenge Nathan to do?
Options: (A) test who had the fastest bike (B) decide who was the most competitive (C) find the secret tracks on the mountain (D) race to the top of BlackMountain

SOLUTION: D

PROBLEM: Article: Ladybirds didn't have black spots on their backs at first. Then a storm broke out, and their famous guide, Caius Insectus, disappeared into the flood , and the few ladybirds who survived had to choose a new leader to guide them out of trouble. They decided that their new leader would be the first ladybird to successfully travel south to the Great Lake and return to describe it. Many young ladybirds moved off immediately into this adventure. One by one they returned and told of how beautiful the southern lake was at that time of year, with its clear waters and flowers. However, the last of the ladybirds was late in getting back. He hadn't managed to reach the lake. Everyone criticized him, and they prepared to continue their journey the next day. Following their new guide, they spent a morning walking northwards until they reached some tall thick grassland, where they stopped. There were no clear waters or flowers in front of them. The heavy rain had turned the place into a huge green puddle . Everyone understood what had happened. When the ladybirds had gone out looking for the lake, they had gone in the wrong direction. Now they could see that, except that one late ladybird, they had lied in order to get what they wanted. And so, the late little ladybird was made the Great Guide. They also decided that every time one of them was discovered lying they would paint a black spot on that ladybird's back. From then on, when a ladybird looks at another's back, it can tell whether that ladybird can be trusted.
Question: Why did the ladybirds decide to choose a new guide?
Options: (A) They lost their way in the storm. (B) They weren't satisfied with Caius Insectus. (C) They needed someone to lead them out of danger. (D) They needed someone to help prepare for the storm.

SOLUTION: C

PROBLEM: Article: It's enough to give anyone an earache. Women spend an average of about five years on the phone during their working lives, research has shown. You won't be surprised to learn that women spend 18 months longer than men on the phone -- who only chat for an average of three years. Both sexes make and receive almost the same number of calls -- 277,000 for men and 288,000 for women. But women spend 13,500 more hours in total on their conversations. More than half of those chats are work-related but people spend on average twice as long on a personal call (10 minutes ) as on a business one. Despite the explosion in mobile phone ownership, most people still prefer to use landlines, the poll found. However, when people are tired of talking, the top excuse for getting a caller off the line is to say "Someone's at the door." Other favorites include "I'm cooking" and "I need to go to the toilet". Eight out of ten phone users admitted not answering their phones on purpose if they did not want to speak to the caller. One in three people thought calls after 10 pm were unacceptable but a quarter of those polled said they did not mind calls up to midnight. Two-thirds admitted they had people in their address books who they should ring but never got round to doing so. Joseph Blass, managing director of telecom company Toucan, said, "As a nation, we love to chat on the phone but it is quite astonishing when we look at the total number of calls we make in a lifetime."
Question: According to the passage, which of the following statements is TRUE?
Options: (A) Women spend about five years talking on the phone during their lifetime. (B) Women make and receive the same number of calls as men do. (C) On average, work-related calls are only half as long as personal calls. (D) Usually a call made by a man is longer than one by a woman.

SOLUTION:
C