Which of the following is an example of cloud computing?

The choice that represents an example of cloud computing is a service that offers on-demand access to shared resources. Cloud computing fundamentally relies on providing scalable and flexible resources over the internet, allowing users to access computing power, storage, and applications as needed. This on-demand model enables businesses and individuals to utilize resources without the need for physical hardware or extensive upfront investment.

In contrast, a dedicated server for hosting a website is specific to one user and does not offer the flexibility or shared resource benefits typically associated with cloud computing. A virtual private network (VPN) service provides secure connections over the internet but does not inherently involve the shared resource aspect of cloud computing. An on-premises database involves managing data locally, as opposed to utilizing cloud-based solutions, which often provide shared access and scalability. Therefore, the choice that reflects the essence of cloud computing is the one that emphasizes shared resource access on demand.