Read the passage from “the lost boys.”

the three brothers have come a long way since they fled their village in sudan with their parents and three sisters—all of whom were later killed by sudanese army soldiers. the lost boys first survived a 6- to 10-week walk to ethiopia, often subsisting on leaves and berries and the occasional boon of a warthog carcass. some boys staved off dehydration by drinking their own urine. many fell behind; some were devoured by lions or trampled by buffalo.

the lost boys lived for three years in ethiopia, in un-supported camps, before they were forced back into sudan by a new ethiopian government no longer sympathetic to their plight. somehow, more than 10,000 of the boys miraculously trailed into kenya’s un camps in the summer of 1992—as sudanese government planes bombed the rear of their procession.

which option best describes the overarching organizational structure of this section?

classification scheme

comparison and contrast

pro and con

chronological order