Etta should add the source of the information to make the note more organized.
This is what informs a person about something on the previous knowledge, which consists of facts and evidences which may be either printed or electronic.
Etta had stated all her points, she should now add all the source of her information to make her research work more organized.
Therefore, the correct answer is option C.
Read more about notes here:
https://brainly.com/question/14396116
