Answer :
Repetition is the use of words, phrases or sentences continuously.
There are various reasons why a person can choose to use repetition which includes:
- To emphasize a point
- To easily remember an event or word
- To persuade a person, etc
Please note that your answer is incomplete and i will give you a general overview of the meaning of repetition and how it can be useful in a piece of writing.
When used as a rhetorical device, repetition is useful to make emphasis about something which the reader might have missed.
There are some types of repetition in literature such as:
- Anaphora
- Mesodiplosis
- Epistrophe, etc
Read more about repetition here:
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