It would be D, the monarch of the United Kingdom.
In The Red Badge of Courage Henry left the man behind because he was not wounded and had at that point been jaded by the experience of war and couldn't stand being around the sight of the tattered man any longer. Everything the man said just reminded Henry of the Atrocities he had witness and pushed him deeper into a sense of isolation and a desire to escape.
Answer:
The ice age came to an end and sea level rose, covering the Beringa bridge.