cat Emma's pet is a cat. The text states that her pet purrs and has whiskers, which are characteristics unique to cats. There is no other animal mentioned in the story that fits these descriptions. To confirm this, let's analyze each of the pets mentioned: 1. John has a dog. Dogs don't purr or have whiskers. 2. Sarah owns a cat. A cat has whiskers and can purr, matching the description given for Emma's pet. 3. Emma's pet purrs and has whiskers. This matches the description of a cat, not any other animal mentioned. 4. Peter has a hamster. Hamsters do not purr or have whiskers like cats do. Therefore, based solely on the information provided about the animals purring and having whiskers, Emma must own a cat as her pet, as no other creature described matches this characterization. The only other options given (dog and hamster) do not fit the clues. Emma could not possibly have a dog or hamster that purrs and has whiskers like a cat does. Only the feline fits the bill. The purring and whiskers are specific details that point definitively to Emma's pet being a cat. While I cannot speculate on the breed or name of the cat, the pet type of a cat is the only reasonable conclusion to be drawn from the limited facts given. No other pet in the story possesses both purring and whiskers, so the cat is the sole answer. In summary, while we don't know much about Emma's cat, we can determine with certainty that she owns a feline pet, not a dog, hamster, or any other type of animal, based on the evidence of the purring and whiskers described in the passage. The cat is the one and only reasonable option to answer the question "What pet does Emma own?" based solely on the information provided about her pet purring and having whiskers. No other pet type is supported by the available details.