why do you have to put a comma before quotations? (shoutout to muffinrolo for the question)

ライティングスキル: AND、BUT、OR、FOR、SO、YET... でカンマを使用する場合

13.3 前にコンマを使用するのはどのような場合ですか?

コンマのお話 ― テリザ・フォラーロン

Writing & Punctuation: How to use a COMMA correctly in a complex sentence

カンマのルール: 接続詞

13.6 カンマを使用するのはどのような場合ですか?

「AND」の前に「COMMA」を使う - 上級英語レッスン

LET'S BUILD A CLI AND PUBLISH TO NPM: THE FINALE

Where do I put the comma? Do I even need a comma?

"When should I use a comma before a dependent clause?" (DSAT R&W / ACT English)

Do you always have to put a comma before someone's name? (3 Solutions!!)

When to Put a Comma Before “While”

How to Use Commas Before AND | Basic Comma Rules in English

Advanced - Comma

Comma before and....

How to Use a Comma | Five Easy Tips for Comma Usage | Natalia Leigh

Advance COMMA Rules | Writing & Punctuation | How to use the COMMA Correctly

Comma or no comma: although

Comma Use Video