medium · GMAT Verbal

Which of the following best explains how the oral account can be both accurate and anachronistic?

1. Geologists have dated several other floods in the region.
2. Each generation retold the flood story but recast its heroes as whichever clan held power at the time of the telling.
3. The ruling clan keeps written records of its own history.
4. Oral histories are generally less reliable than written ones.
5. The flood was severe enough to reshape the local river system.

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