Anthropologist: One of the distinctive traits of humans is the ability to support a large brain with a small gut, which requires getting more calories from less food. It was likely the development of cooking that made this possible. After all, our ancestors developed large brains around the time that they began to control fire. And even today, people who choose to eat only raw food have difficulty getting enough calories. Which one of the following, if true, most strengthens the anthropologist's argument? ['Raw meat contains more calories than a similar quantity of raw vegetables.', 'The human body uses more calories to process raw food than it uses to process cooked food.', 'Cooked foods contain the same number of calories as raw foods.', 'Domesticated plants and animals are richer in calories than their wild counterparts are.']