Which of the following best describes the function of a web server?

The function of a web server is primarily to serve web pages to users. When a client, such as a web browser, requests a web page, the web server processes that request and sends the appropriate content back to the client. This content can include HTML files, images, scripts, and other resources necessary for displaying a web page.

Web servers operate based on requests from clients, responding with the requested resources and ensuring that those resources are delivered effectively over the internet. This process is fundamental to web browsing and enables websites to be accessed and interacted with.

The other options, while they represent various functions that other types of servers or applications might perform, do not align with the primary role of a web server. Managing user accounts is more relevant to application servers or directory services, acting as a firewall pertains to network security appliances, and creating applications is typically the domain of development environments or cloud services.