Read these lines: "And not only did he learn by experience, but instincts long dead became alive again. And when, on the still cold nights, he pointed his nose at a star and howled long and wolflike, it was his ancestors, dead and dust, pointing nose at star and howling down through the centuries and through him." What idea do the quoted lines express?

1. 1. The first sentence states the idea directly: instincts long dead became alive again. 2. 2. The howl is then described as his ancestors howling through him, which is a figure for inherited habit. 3. 3. Waking inherited habit is exactly what the first option names. 4. 4. Option B makes the howl a message to nearby dogs, but the lines aim it at a star, not at the camp. 5. 5. Option C makes the howl learned, while the lines call it an instinct that revived without teaching. 6. 6. Option D adds fear, which the still cold nights and the long howl do not support. _Source: The Call of the Wild by Jack London (1903)_