What is the primary purpose of a sprinkler system in buildings?

The primary purpose of a sprinkler system in buildings is to control fire hazards. Fire sprinkler systems are designed to automatically activate when the temperature rises to a certain level, effectively controlling or extinguishing flames and preventing the spread of fire. By discharging water onto the area affected by fire, these systems significantly reduce property damage and increase the chances of saving lives by improving safety.

Regarding the other options, while aesthetic features, cooling solutions, and enhancing interior design might have some relevance in specific contexts, they do not capture the essential function of a sprinkler system. Fire control is the critical factor that justifies the installation of these systems in most buildings, especially in commercial and residential settings where fire safety regulations mandate their use.