Question

ernest hemingway, part of the \lost generation,\ often wrote works related to
the excesses of wealth.
the futility of war.
the conflict between classes.
the hope of youth.

Explanation:

Ernest Hemingway, a key "Lost Generation" writer, drew heavily from his World War I experiences. His works frequently explore the disillusionment, trauma, and senselessness of war, which aligns with the theme of war's futility. The other options do not match his core recurring subject matter.

Answer:

the futility of war.