Final answer:
The average winter temperature at the North Pole is greater than -42°F, meaning it is warmer than 42°F below zero.
Step-by-step explanation:
The question asks about the average winter temperature at the North Pole. If the average winter temperature is greater than -42°F, it means that the temperature is warmer than 42 degrees Fahrenheit below zero. Thus, the correct answer to the question is that the average temperature is warmer than 42°F below zero. It's important to keep in mind that when we talk about temperatures in the context of winter at the North Pole, we are typically referring to temperatures below the freezing point of water (32°F or 0°C), so positive temperatures in Fahrenheit would not be typical.