A company is planning to create several Virtual Machines in Azure. Which of the following is the right category to which the Azure Virtual Machine belongs?

Answer options:

A.Infrastructure as a service (IaaS)
B.Platform as a service (PaaS)
C.Software as a service (SaaS)
D.Function as a service (FaaS)

Answer – A 
The Microsoft documentation gives an example of the difference between IaaS, PaaS, and SaaS, as shown below. 

IaaS constitutes the Infrastructure that constitutes your Azure Virtual Machines. 
Since this is clearly shown, all other options are incorrect. 
For more information on what is IaaS, please visit the below URL- 

https://azure.microsoft.com/en-us/overview/what-is-iaas/