In this paragraph. at what time of day is the action taking place

What questions should readers ask about the exposition of a story?

Read this information that associates hemingway with modernism, a literary movement in american literature and answer the question. modern literature emerged during the period that encompassed both world wars, partly as a response to the horrors witnessed by society at the time. many creative thinkers and writers, known as the lost generation, left the united states for europe. hemingway was among them. his writing style consisted of “ … extremely spare, blunt, simple sentences and emotions that play out right on the surface of things. there is an irony to this bluntness, however, as his characters often have hidden agendas, hidden sometimes even from themselves, which serve to guide their actions.” according to this information, which characteristic of modernism is most evident in “hills like white elephants”? characters who hide secret intentions from one another dialog that subtly suggests communication conflicts imagery that highlights the importance of the setting metaphors that reveal significant plot developments

Which of these number is main idea? i need this answer.