What is true about the lost generation

They were trying to find meaning in chaotic post-World War I societies.

Explanation:

Novelist/poet/playwright Gertrude Stein referred to herself and other writers like her as "The Lost Generation."  World War I and the aftermath of the war is what gave them a feeling of lostness.  The Lost Generation was affected by disillusionment by those came of age during the war years, and began to question traditional values.  Some of the writers of the "Lost Generation" were Ernest Hemingway, F. Scott Fitzgerald, and T. S. Eliot - along with Gertrude Stein herself.  

i believe your answer is d)

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.