Final answer:
The given information doesn't provide specific data needed to answer the question about the percentage of kids choosing a cereal box with animated characters; the question seems to explore the impact of marketing on children's preferences.
Step-by-step explanation:
The question about the percentage of kids choosing a cereal box with an animated character on the front versus a plain box relates to a study of marketing strategies and their influence on children's choices. However, the details required to answer this question directly, such as survey data or statistical results, are not provided in the given information. It appears that the student's question seeks to understand the impact of marketing and advertising on children's preferences, an effect exemplified in the 1980s with popular cartoons serving as both entertainment and product promotion.