Which of the following is a beneficial food for a child’s snack?

Air-popped popcorn is an excellent choice for a child's snack because it is a whole grain that provides dietary fiber, which is important for digestive health. Additionally, popcorn is low in calories when not overloaded with butter or salt, making it a healthier option for a snack. It can also help promote satiety, keeping children feeling fuller for longer between meals.

This choice aligns well with nutritional guidelines that encourage whole grains and minimize added sugars and unhealthy fats. While the other options may contain appealing flavors and textures, they often include higher amounts of added sugars, unhealthy fats, or lack the nutritional value that air-popped popcorn offers. Therefore, it stands out as a beneficial option for a child's diet.