Can somebody think of a metaphor for a pebble plz

Exit in which of the following passages from the text is the author's motif of displacement and separation most evident? a. "in these ways it was a typical wartime departure, full of proud smiles and half-concealed worry." b. "it upheld the army's decision to limit the movements of a racially select group of citizens." c. "once the first year's turmoil cooled down, the authorities started letting us outside…" d. "if anything made that country habitable it was the mountains themselves…"

Read this excerpt from tim o’brien‘s “ambush” “i had already pulled the pin on a grenade. i had come to a crouch” which literary device is most clearly shown in this excerpt?

Which best describes the tone in these lines "the fish"