Answer:
Option E is correct.
Google Apps are an example of software as a service (SaaS).
Step-by-step explanation:
I'll provide definitions to each of them.
Platform as a Service (PaaS): hardware and software tools available over the internet.
Software as a product (SaaP): product, software, which is made to be sold to users, and users pay for licence which allows them to use it. A good example of SaaP is the Microsoft Office package.
Platform as a product (PaaP): This creates a platform for product owners to put their products & for people to get their required products.
Infrastructure as a Service (IaaS): cloud-based services, pay-as-you-go for services such as storage, networking, and virtualization.
Software as a Service (SaaS): software that's available via a third-party over the internet.
From these definitions, it is clear that Google apps are examples of software as a Service because all the Google apps are software's that's available via a third-party over the internet.
Hope this Helps!!!