Final answer:
The Public Cloud model represents a pool of services and resources delivered over the Internet, offering scalability, cost-reduction, and efficiency.
Step-by-step explanation:
The cloud delivery model that could be considered a pool of services and resources delivered across the Internet by a cloud provider is the Public Cloud model. In the Public Cloud model, cloud services are provided in a virtualized environment, constructed using pooled shared physical resources, and accessible over a public network such as the internet. This allows for a great degree of scalability, where services can be provided to multiple clients using the same shared infrastructure. The Public Cloud is well-suited for a wide variety of computing tasks and is often used by organizations to reduce costs, improve efficiency, and provide flexibility in their IT infrastructure.