A food company has designed new types of breakfast cereal and is now working to decide which cereal to mass produce and begin selling. They can measure some traits of the cereals with scientific tools, but they also use small surveys to ask cereal buyers about their opinions. Which question could most likely be answered scientifically by the food company?

Which cereal's box is the best color?
Which cereal tastes the best to every eater?
Which cereal contains the most sugar?
Which cereal would sell the most boxes?