The correct answer to this question is D, Devising, or modifying a process or system. When a person uploads copyrighted material in a YouTube video, Instagram post, or Facebook post, the material is flagged for copyright. Despite that, there are many ways around it. One way is to state either in the video itself or in the comments that one doesn't own the rights to the music.

Another way is what the question suggests, which is to modify the process through coding. This method is popular on YouTube. Another popular method on YouTube is to play up short segments of the song so that it won't get flagged.