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.
One example: 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 is here: Researchers did experiments on kids in order to find out _ .
Explanation: It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment.

Now, solve this: Article: Up to two-fifths of a food crop is often wasted because it is "ugly", a report on food waste has shown. Produce grown in the UK that does not meet retailer standards on appearance is often given to animals or thrown out even though it is healthy to eat. The report from the UK's global food security program also showed that the average household throws away more than 5kg of food a week, and nearly two-thirds of that waste is avoidable. The waste costs PS 480 a year per household on average, and PS 680 per family. Households throw away a fifth of the food they buy, wasting it for reasons ranging from cooking too much to not using it before it goes bad, the study showed. Consumption is the top area where food is wasted in the UK, the study said. Farmers respond to consumer demands for high-quality food with standards that can lead to the crop being wasted. Some supermarkets have started marketing "odd shapes and sizes" of fruit and vegetables, though. Also, more UK consumers are prepared to accept "ugly" fruit and vegetables, amid concerns over sustainability and food prices, the research said. In developing countries, much of the loss of food occurs during post-harvesting storage, processing and packaging. Tackling waste globally is necessary to feed a growing world population sustainably. One in eight people worldwide doesn't have enough food, the report said. Around a third of food produced globally is lost or wasted. Professor Tim Benton, an expert on food security at the University of Leeds, said: "Over 5 million people in the UK live in poverty, where basic food provision is a daily challenge." Nearly 400,000 people used food banks last year, according to the Trussell Trust. "At the same time, 15 million tons of food is wasted annually, with nearly half thrown away within UK households. Reducing the scale of losses and waste throughout the food system is a crucial step." The report highlights priorities for research to help reduce food waste, including improving harvesting and packaging technologies and seasonal weather prediction.
Answer: people's lack of concern about food shortages
Solution:
Food waste in developing nations is mainly due to _ .