Answer:
los borradores
Step-by-step explanation:
When you are speaking in spanish, you just need to think two things, to make a word plural you often add an "s" if the word ends on a vowel, or "es" if the word ends with a consonant. And to change "el" into plural you go with "los".
So if the singular is "El borrador" the plural would be "Los Borrador-es"