Answer:
free license
Explanation:
An "open-source software" is a type of software that consists of a source code. This source code may be used, modified or distributed by any user and for any purpose, as long as it is permitted by the copyright holder.
So, this means that the developer behind this software may distribute it for "free." Since it is free, the users will not be paying any fees.
So, this makes the answer ",free license," above as correct.
