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B. There is a lot of evidence that children notice and enjoy food promotion, but determining its actual influence is a complex task. The review focused on studies examining its effects on children's food knowledge, preferences, buying and eating behaviors, and health outcomes like obesity or cholesterol levels. While most studies focused on food advertising, a few considered other forms of promotion. Regarding nutritional knowledge, food advertising seems to have little effect on children's overall understanding of a healthy diet. However, it does affect more detailed nutritional knowledge. For instance, exposure to soft drinks and cereal ads lessens primary-aged children's ability to identify whether certain products have real fruit.
C. The review also found evidence that food promotion influences children's food choice and purchase behavior. A study of primary school children, for instance, found that exposure to advertising
influenced which foods they like; and another showed that labeling and signage on a vending machine affected what was bought by secondary school pupils. Many studies have also shown that food advertising can influence what children eat. One, for example, showed that advertising influenced a
primary class's choice of daily snack at playtime.
D. They have established a clear link between television viewing and diet, weight gain, and
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