It is that it is unrealistic to believe that wars are not deadly.
Answer A. Innate.
We do not know if it is a trait that all humans are born with (which would be innate), or if it's something that we develop as we grow older.
The other words wouldn't make sense in the place of innate.
<span>Never give up. is your answer.
Note that, even though the mission is almost impossible, the character "<em>never gives up trying</em>" to accomplish it, which means that "Never give up" is the theme of the story.
hope this helps</span>