Assuming you are asking about the font type:
There is no one "correct" answer to this question. Some fonts are considered more professional or easy to read than others, but ultimately it is up to the individual to decide what font they want to use on their resume.
Some popular professional fonts include:
- Times New Roman
- Arial
- Calibri
- Cambria
If you want to stand out, you could also use a more unique or stylish font, as long as it is still easy to read. Just make sure that whatever font you choose, it is consistent throughout your resume.
You can find more information and discussion on this topic here:
https://www.quora.com/What-is-the-best-font-for-a-resume