The correct answer is D. She should prevent the dog from eating any of her snacks.
Explanation
Xylitol is a chemical compound also known as birch sugar that is used to sweeten some products such as gum and candy, ice cream, chocolates, unsweetened peanut butter, among others. One of the main characteristics of this compound is that it does not stimulate the release of insulin from the pancreas in humans. However, in dogs, it does not have the same effect, since when dogs eat something that contains xylitol, it is absorbed more quickly into the bloodstream and can cause a powerful release of insulin from the pancreas causing a rapid decrease in sugar level in the blood. According to the above, the correct answer is D. She should prevent the dog from eating any of her snacks since her dog's life is in danger if he ingests Xylitol-sweetened.