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I'm taking a test and have to guess the right answer to the question after the article. Article: Children and teenagers who spend lots of time in front of screens-especially TVs-are easier to get more weight as they age .according to a new study. The findings agree with research suggesting all that inactive sitting and always watching advertisements may lead to poor eating habits. Researchers used results from a long-term study of children Who took surveys every other year. Children were between ages 9 and 16 when the study started. Out of 4,300 girls in the Study. 17 percent were overweight or obese .Twenty-four percent of the 3 .500 boys were also above a healthy weight The surveys included questions about their height and weight as well as how much time they spent watching TV and DVDs and playing computer and video games. From one survey to the next, each one-hour increase in children's daily TV watching was in connection with an increase of about 0.1 points on a body mass index(BMI) , which measures weight in connection with height. That's a difference of about half a pound per extra hour of TV. "The weight of the evidence is so strong that television watching is connected with unhealthy changes in weight among youth,"says Jennifer Falbe . Who led the study while at the Harvard School of Public Health in Boston. "It's important for parents to know all the obesity-causing screens that really should be limited in their children's lives, Falbe says. " When children watch TV. There are many food advertisements on TV that might lead them to eat a cookie or drink a soft drink. " What's mare .she says . " You can get into a hibernating state on the sofa. Even if children are sitting down while playing a computer game. for example. they might be a bit more active." Question: How many children took part in the study? Options: A: 4.300. B: 3.500. C: 7.800. D: 9,800.
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C

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I'm taking a test and have to guess the right answer to the question after the article. Article: Plants that live in the rainforest have adapted in amazing ways to several very difficult conditions. This means that the plant has changed something in its "body" or "habits" to make it easier to survive in difficult conditions. There are several conditions they have had to adapted to. First, the soil of the forest floor is shallow. Also, the soil of the rainforest is not very rich, or easy to grow in. Next is the problem of very heavy rain which continues over a large part of the year. Finally, many plants of the rainforest are food for animals that live there. The biggest problem that rainforest plants have to adapt to is the lack of sunlight in the rainforest's lower levels. Plants have adapted to this problem in several ways. Many plants have very large leaves. The large leaf is helpful because it has a bigger surface area. The bigger surface area a leaf has, the more sunlight it can absorb. The canopy trees adapt by growing to be 100 feet tall so that their leaves can grab all available sunlight. Other plants called lianas have adapted by rooting themselves in the soil of the forest floor and growing up the trees until they reach the canopy layer. Still other plants, such as epiphytes, have adapted by growing directly on the trees' trunks and branches in the canopy and understory layers of the rainforest. An adaptation to the large amounts of rainfall that many rainforest plants have is called "drip tips". Their leaves are tapered to a sharp point at the end. This allows water to run off the leaf quickly. There are many other adaptations that rainforest plants have made to their environment. These will be discussed in detail, as we investigate the plants of the rainforest! Question: Which of the following is a difficulty that the rainforest plants have to face? Options: A: Changes in their "body" or "habits". B: Epiphytes that grow on trees' trunks. C: Soil that is not very deep. D: The worsening of the natural environment.
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C

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I'm taking a test and have to guess the right answer to the question after the article. Article: On a cool summer night in Wyoming, Dean Biggins waits patiently in his truck. Suddenly, Biggins, a wildlife biologist, spots a pair of eyes in the distance. Baggins can't believe his luck: He's just caught sight of a black-footed ferret --one of the world's rarest animals. Just over a century ago, hundreds of thousands of black-footed ferrets lived on the grasslands in North America known as the prairie. But the animals died off as prairie dog disappeared. Black-footed ferret depend on prairie dogs for both food and shelter. After a ferret has eaten a prairie dog, it moves into the animal's burrow . When cattlemen started setting up ranches on the prairie in the early 1900s, they thought prairie dogs, which eat grass, might compete with their cattle and sheep for food. To make sure that didn't happen, they killed off billions of prairie dogs. As prairie dog populations dropped, black-footed ferrets disappeared. By 1979, researchers couldn't find any ferrets and declared the species extinct. Then, two years later, a small group was discovered. Although scientists were excited about the discovery, it soon became clear that the ferrets were in danger. A disease called sylvatic plague was killing the ferrets. Soon, just 18 ferrets remained. "To help the species survive, the researchers put all the ferrets in cages in 1986 and began raising them," says Randy Matchett, a wildlife biologist. To help the black-footed ferrets learn survival skills, wildlife biologists put them through a process called preconditioning. Researchers build a fence around old prairie dog burrows and put the ferrets in them when they are a couple of months old. While the animals get used to their new home, researchers feed them live prairie dogs so they can practice hunting. "Now about 1,000 black-footed ferrets are back in the wild. Despite their amazing comeback, black-footed ferrets aren't out of the woods yet," says Matchett. Sylvatic plague is still a threat, and ranchers still don't want too many prairie dogs on their land. "We... Question: Black-footed ferrets once became extinct mainly because _ . Options: A: they lacked food B: they were overhunted C: a disease attacked them D: their habitat was destroyed
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A