"ref" can stand for refund, refugee, or reference
Correct Answer: They are assigned to work as laborers in a factory at another camp, Buna.
(SOURCE) I took the test, and got this answer correct.
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A simile is an indirect comparison between two things using like or as, personification is the use of human characteristics to describe inanimate objects, paradox is a seeming contradiction, oxymoron is a combination of two words that seem to be contradictory and an anaphora is repetition of a word or phrase at the start of a series or clauses