Final answer:
The young man in the passage from "War" and the couple in "Not to Keep" both feel helpless to change their situation, reflecting a common theme in war literature of individuals being at the mercy of larger forces.
Step-by-step explanation:
The young man in the passage from "War" and the couple in the poem "Not to Keep" are similar in that they feel helpless to change their situation (option c). Both are caught in the machinations of war, and despite their personal circumstances or feelings, they are unable to alter the course that has been set for them by the war. This sense of helplessness is a common theme in literature about war, as individuals often find themselves at the mercy of larger forces beyond their control. Whether it is a young person sent to the front or a couple separated by the demands of wartime, the war inevitably shapes their lives in ways they cannot resist. This theme is further supported by various texts, including poems and stories that discuss the bravery and often the lack of hopefulness experienced by those involved in war.