Answer:Here are the answers, categorized as "positive" for proper etiquette and "negative" for improper etiquette:1. NegativeShouting and grunting while lifting weights can be disruptive and disrespectful to others.2. NegativeLeaving music players and speakers anywhere is inconsiderate and can lead to clutter and potential damage.3. NegativePlaying loud music inside the gym can be distracting and annoying to others.4. NegativeSmoking cigarettes in the dance studio is extremely disrespectful and harmful to others' health.5. PositiveThrowing away used supplies and waste materials in designated trash bins is a crucial part of maintaining a clean and safe environment.