medium · GMAT Verbal
To save a southern pine from warming, foresters plan to plant it hundreds of miles north. A botanist warns: every batch of these pines they tested carried a fungus harmless to the southern pine but lethal to the northern firs already growing there.
Which of the following must be true based on the statements above?
- Planting the pines up north will definitely kill the northern firs.
- Every tested batch of the southern pines carried a fungus lethal to northern firs.
- The fungus is the only threat the northern firs face.
- The southern pine cannot survive in its current range.
- Without assisted migration, the southern pine would go extinct.
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