What is the function of the registry in a computer system?

The registry serves as a central database that stores configuration settings, options, and information about the operating system and installed applications on a computer. It contains crucial details regarding system hardware, software, user preferences, and even system security policies. This centralized storage allows the operating system to efficiently access and manage the configuration settings needed to operate the system and applications effectively.

The other choices, while related to certain aspects of computer functionality, do not encompass the full scope of what the registry does. The registry is not limited to storing applications only; it encompasses much more. Although it plays a role in controlling hardware performance and managing user permissions, these functions are part of the broader data stored within the registry rather than standalone responsibilities. This comprehensive nature of the registry as a system information database makes it a critical component of the computer's configuration and operation.