Answer:
The question which can be answered using the scientific method is the following one:
A) Which type of dog food has more calories per serving: National, Dog's Best, or Good Chow?
Explanation:
The question in letter A needs a more systematic method to be answered, since it is about data that has to be presented accurately.
Letters B, C and D are questions whose answers rely on subjectivity and one's senses, since they are basically about preferences. Therefore, the scientific method is neither necessary nor the correct way to answer those questions.
