What is the primary purpose of a device driver?

The primary purpose of a device driver is to control hardware under the supervision of the operating system. Device drivers serve as intermediaries between the operating system and the hardware components of a computer, allowing the OS to communicate effectively with the hardware. Each device, such as a printer, graphics card, or network adapter, typically requires a specific driver to function correctly. This driver translates the operating system's commands into a language that the hardware can understand, ensuring that the hardware operates as intended.

In the context of the other options, enhancing system security is a vital aspect of operating systems and applications but is not the main role of a device driver. Managing storage pertains to how data is organized and accessed on a computer but does not specifically relate to the function of a device driver. Providing internet connectivity is a function associated with network devices, but it depends on the presence of the appropriate device driver to allow the network hardware to interface with the OS and enable network communications effectively.