Quasar hosts are the galaxies in which quasars are located. Quasars are extremely powerful and distant objects that emit massive amounts of energy, often powered by supermassive black holes at their centers. Studying quasar hosts can provide insights into the formation and evolution of galaxies, the relationship between supermassive black holes and their host galaxies, and the physical processes that lead to the powerful emission from quasars. Researchers often use a combination of observational data and theoretical models to study quasar hosts and their properties.