Final answer:
The "link to existing file" option creates a hyperlink to a file already stored within the system or network. Following selection of this option, you need to select and confirm the file you wish to link.
Step-by-step explanation:
When the content management functionality of a system includes an option to "link to existing file", it typically allows for the creation of a hyperlink within a document or post that directs to a file already saved within the same system or network. Upon clicking this option, you generally need to follow these steps:
- Browse through a list or directory of available files.
- Select the file you wish to link to, which could be on a shared drive or within another location in the system.
- Confirm your selection, usually by clicking an 'OK' or 'Confirm' button.
Therefore, the correct answer to the question is C. It links to an existing file in the system; After clicking, select the file and confirm.