Fangfang, a 15-year-old Chinese girl, likes eating snacks very much. She prefers cream biscuits, McDonald's food, KFC, and Beijing roast duck. Sometimes she eats two packages of biscuits a day. As a result, she becomes _ . Today in China, there are many children like Fangfang. They like snacks. They don't eat enough healthy foods like vegetables and fruit. It's very bad for their health. Poor eating habits are a serious problem. Health experts say that children should have healthy eating habits. First, they must eat regular meals and begin with a good breakfast. Second, they should have different kinds of foods, such as fruit, vegetables, grain, eggs, milk and meat and so on. Third, the children shouldn't eat too many snacks and fried foods. They are delicious, but eating too much of them is unhealthy. If children do as the experts say, they won't become fat. They will be healthier. Students won't become tired at school, and they will have enough energy to study well. Fangfang becomes overweight, because   _  .
she is an American girl she has a balanced diet she likes eating snacks she likes vegetables soup