Respuesta :
My mother writes and edits for a magazine(,) and my father edits novels.
The third one:
My mother writes for a magazine, and my father edits novels.
It has two main ideas and need the comma with the coordinating conjunction being and in this situation.
My mother writes for a magazine, and my father edits novels.
It has two main ideas and need the comma with the coordinating conjunction being and in this situation.