"Pt size" refers to the size of the text, usually in print or digital documents. It determines how big or small the text appears on the page. Full definition
So, make the standard size font like 12 pt sized fonts of Times New Roman, Calibri, and Cambia etc that very readable to give your essay a professional look. (essayschief.com)
If you're using the Arial font, you should use between 10.5 and 12 pt sizes for the best results, according to (resumetemplates2018.com)
If you're using the Arial font, you should use between 10.5 and 12 pt sizes for the best results, according to Monster. (resumetemplates2018.com)