Which of the following describes creative work that can be used without permission because it is owned by the public and not an individual?

a) fair use
b) signed release forms
c) public domain
d) derivative works

C) public domain

Explanation:

Public domain is when something can use it without any restriction, these domains can be used in Photographs, videos, music, etc.

These files are public because the author has decided, we can use these files in our project without pay nothing and give any reference about the author, is not necessary but you can do it, sometimes you can donate to the author.

the only way i would see could be an autoclicker type software. but that is very time consuming.