The sentence that contains coordinated adjectives that should be separated by commas is: "The bus was hot, crowded, and loud, so we decided to get off and walk."
The sentence "The bus was hot, crowded, and loud, so we decided to get off and walk." contains coordinated adjectives that should be separated by commas.
The sentence "The bus was hot crowded in loud, so we decided to get off and walk." contains coordinated adjectives that should be separated by commas. The coordinated adjectives in this sentence are "hot," "crowded," and "loud." These adjectives are describing the bus and are joined together with the word "and" before the last adjective, which indicates coordination. In order to separate these adjectives correctly, we need to insert commas between them. A correct version of the sentence with the coordinated adjectives separated by commas would be: "The bus was hot, crowded, and loud, so we decided to get off and walk."
