English and the Austronesian language Mbarbaram both use the word “dog” for canines. These two languages are unrelated, and since speakers of the two languages only came in contact with one another long after the word “dog”was first used in this way in either language, neither language could have borrowed the word and meaning the similarity is due neither to language relatedness nor to borrowing.
What this question is testing
Your task
Find the assumption the argument requires in order for its conclusion to hold.
Common trap
Answers that would help the argument but aren't strictly required (sufficient, not necessary).
Winning move
Negate each choice — the right one breaks the argument when negated.
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