Which of these states a central message of "To Build a Fire"? To survive in extreme conditions, be sure to carry enough food.
To survive in extreme conditions, be sure to carry enough food.

To survive in extreme cold, dress in warm clothing and boots.
To survive in extreme cold, dress in warm clothing and boots.

To survive in the wilderness, pay attention to your surroundings.
To survive in the wilderness, pay attention to your surroundings.

To survive in the Arctic, know when summer is due to arrive.