I think in places like libraries and museums, it's important to keep quiet. This shows respect to others who are there to study or think. Loud sounds can make it hard for people to focus or concentrate. For example, in a library, people need a quiet place to read and learn, and in museums, being quiet helps visitors enjoy and think about the exhibits without being disturbed.

I believe the main reason libraries and museums need to be quiet is for respect and concentration. These places are good for reading, studying, and enjoying art and history. Loud noises can disturb people's focus and pleasure. Being quiet shows care for others who are studying or looking at the exhibits. It's about making a place where people can peacefully learn and appreciate the knowledge or art.