The process that makes your writing flow and "sound like music" is option A. editing the language of your essay. Editing the punctuation will only change the speed of the reading of the writing, Meanwhile, when deciding the words you will implement in the essay you can create different sounds that could result in a type of music. For instance, you can repeat the consonants or vowels to create a sound and the resource known as alliteration gives a sentence flow.
My best answer would most likely be a. Editing the language of your essay. Editing the title is only a first impression and could be followed by a piece of writing lacking in flow. Editing punctuation would be my second choice, but it doesn't apply as much, in my opinion. And for the last choice, I'm pretty sure at least on of the three are practical options.
