Answer: 4
Explanation: "As a rule of thumb, if a food does not contain nutrients or if the calories from sugar and fats outweigh the nutrients found in the food, it's considered to be a source of empty calories."
-houstonmethodist.org
"Empty calories come from foods that have little to no nutritional value. They include cakes, candies, soft drinks, solid fats, and more."
-medicalnewstoday.com