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In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.

Article: Homework can put you in a badmood , and that might actually be a good thing. Researchers from the University of Plymouth in England doubted whether mood might affect the way kids learn. To find out the answer, they did two experiments with children. The first experiment tested 30 kids. Someshapes were hidden inside a different, larger picture. The kids had to find the small shapes while sitting in a room with either cheerful or sad music playing in the background. To test their mood, the scientists asked the kids to point to one of five faces, from happy to sad. Children who listened to cheerful music tended to point to the smiley faces while the others pointed to the unhappy ones. The researchers found that sad kids took at least a second less to find the small shapes. They also found an average of three or four more shapes. In the second experiment, 61 children watched one of two scenes from a film. One scene was happy, and the other was sad. Just like in the first experiment, kids who saw the sad scene acted better compared to the others. The researchers guessed that feeling down makes people more likely to focus on a problem or difficult situation. Not all scientists agree with them, however. Other studies argued that maybe, that cheerful music in the first experiment distracted kids from finding shapes. While scientists work on finding out the answers, it still might be wise to choose when to do your tasks according to your mood. After eating a delicious ice cream, for example, write an essay.
Answer: whether mood affects their learning ability
Solution: Researchers did experiments on kids in order to find out _ .
Why? It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment.

New input: Article: Dr. Julie Coulton, a British psychologist, focuses her research on the extraordinary function of the play in the physical and spiritual development of children and Martti Bergson from the University of Helsinki shows that playing outside, in the open air, contributes to a better development of the brain. Thus parents must encourage their children to spend as much time as possible in the open air, and at the same time, to ask schools and kindergartens to assure the small a playground outside. Recent statistics and studies show an alarming increase of the number of hours spent by children in front of the TV and the computer and a decrease of the time spent outside. As a consequence more and more children suffer from eye problems and have to wear glasses. Also the problem of fatness among children concerns many parents who don't know what to do anymore to make their children eat healthy and balanced. Children need a space where to develop their creativity mid parents should encourage them all the time. Too many rules hold back the child's personality and creativity and prevent them to develop the desire to know, to find out, to learn. If you tell your child so many times: "Don't do that, don't mess the room, don't go there ...", he will lose the desire to do something, anything. Parents must watch their children without suffocating them. Should you consider they mustn't do that or this, you have to logically explain them your reasons and they will understand. Through playing a child learns how to communicate, how to take decisions. Playing is connected to the intellectual, emotional and social progress of the child. Playing lets your children learn how to express his feelings.
Answer: most children spend more time on TV or tile Internet than on playing outside
Solution:
What is worrying the scientists is that _ .