The answer would be C. Serving size
This is the correct answer since you need to see the portion size and what is the recommended amount for a human to consume. Then you should look for calories. You should see how many calories you will consume per serving to stay on a healthy track and not go over the 2,000 calories a day that is recommended. Then look for the calories from fat and see how much of the calories you will be consuming will be turned into fat. Lastly, look for the number of servings if you are going to feed more then one person then see if it has enough servings for everyone.
Hope this helps! :3