These elements are best known for performers memorize an epic poem.

a. supernatural elements and poetic language

b. detailed descriptions and informal language

c. rhyme, rhythm, and repetition of certain words

d.elevated language and lists of historical events

The elements which are best known for helping performers memorize an epic poem are rhyme, rhythm, and repetition of certain words. The answer to your question is C. I hope this is the answer that you are looking for and it comes to your help.

Answer;

-Rhyme, rhythm, and repetition of certain words

The elements that are best known for helping performers memorize an epic poem include rhyme, rhythm, and repetition of certain words.

Explanation;

-Rhyme is the repetition of the final sound or sounds of a word. It is used to create unity of sound and sense, and repetition to assist memory. Rhythm is important in making it easier to remember for recitation. These rhythms are especially enjoyable, because they reflect the natural movement of the human body

1. D i think
2. A. 
3. B
4.C i think
5. A

Hope this helped