Final answer:
The best example of fast-paced narration is the scene showing a hunted man swimming vigorously with the current, his thoughts racing as quickly as his physical movements.
Step-by-step explanation:
The excerpt that is the best example of fast-paced narration from the provided texts is the one depicting the hunted man swimming for his life. The sense of urgency is conveyed through the rapid thought processes and action of the character, illustrating a high-stakes, tense moment. The specific excerpt is:
The hunted man saw all this over his shoulder; he was now swimming vigorously with the current. His brain was as energetic as his arms and legs; he thought with the rapidity of lightning.