Final answer:
Many oral stories were created with a rhythmic or sing-song quality to make them easier for B)listeners to remember and retell, using the pattern of rhyme and meter as a mnemonic device.
Step-by-step explanation:
One reason that many oral stories were rhythmic or sing-song is so that listeners could remember and retell them. Such patterns made the stories easier to recall, reinforcing memory through acoustic encoding.
Ancient cultures like the Greeks and Polynesians placed their tales in rhyme and meter which facilitated the transmission of culture and history. Ballads and children's rhymes, with their distinct rhythms and rhymes, are historical examples of this mnemonic strategy.