Which is a description of service provision?

The ITIL SVS describes how all the components and activities of the organization work together as a system to enable value creation.

The SVS is made up of specific inputs, elements, and outputs relevant to service management. The key inputs to the SVS are opportunity and demand. The output of the SVS is value delivered by products and services.

Opportunity refers to options or possibilities to add value for stakeholders or otherwise improve the organization.

Demand refers to need or desire for products and services among internal and external consumers.

https://www.bmc.com/blogs/itil-service-value-system/