Final answer:
The Public Cloud Service allows for quick access from the internet, and it is the model that provides services like storage and applications over the shared infrastructure to the public.
The correct answer is option d) Public Cloud Service
Step-by-step explanation:
The cloud service that allows quick access from the internet is the Public Cloud Service. It is designed to offer services such as storage, virtual machines, and applications to the general public via the internet. When comparing the options given, such as Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS), all of these models can be deployed over a public cloud; however, the Public Cloud Service itself is what delivers this swift internet accessibility. The distinct feature of the public cloud is that it provides services to multiple customers using the same shared infrastructure.