What’s the difference among these foods? Does it matter what you feed your dog or cat? Yes, it does matter. What is the effect of the use of questions in this paragraph? They emphasize the author's concern that pet owners are indifferent about providing appropriate nutrition for their pets. They introduce the author’s viewpoint that pet owners should educate themselves about pet nutrition. They clarify the author's purpose to argue that pet food manufacturers produce inferior products. They demonstrate the author's appreciation for the range of nutritional options available to owners and their pets.