Answer: An open-source
Explanation:
Audacity is the open source software program which is available worldwide. It is basically used by millions of people as it available free for download. The audacity is one of the mastering and the editing tool for audio and recording applications.
The audacity software is available for operating system like windows and MAC-OS. The audacity software is used in many purposes like commercial, educational purpose and personal use.
Therefore, An open-source is correct option.
