Object storage is typically used to house virtual machine images because it is independent from other systems and is focused solely on storage. It is also the most appropriate for handling large individual files. Volume storage, because it is allocated to a specific host, would not be appropriate for the storing of virtual images.
Structured and unstructured are storage types specific to PaaS and would not be used for storing items used throughout a cloud environment.

Explanation/Reference:
Explanation:
Forensics refers to the application of scientific methods and protocols to the investigation of crimes.
Although forensics has traditionally been applied to well-known criminal proceedings and investigations, the term equally applies to digital investigations and methods. Although the other answers provide similar- sounding terms and ideas, none is the appropriate answer in this case.

With Infrastructure as a Service (IaaS), the cloud customer is responsible for deploying and maintaining its own systems and virtual machines. Therefore, the customer is solely responsible for patching and any other security updates it finds necessary. With Software as a Service (SaaS), Platform as a Service (PaaS), and Desktop as a Service (DaaS), the cloud provider maintains the infrastructure components and is responsible for maintaining and patching them.