Answer:
D. by checking the version history
Step-by-step explanation:
When you access a document that is stored on the server and it is used by several teams, you can check the version history by going to file, then version history and see version history and in there, you can check all the versions, who edited the file and the changes that have been made. According to this, the answer is that the teams know that they are accessing the latest copy of the document on the server by checking the version history.
The other options are not right because a duplicate copy and taking a backup don't guarantee that you have the latest version of the document. Also, a reporting tool is a system that allows you to present information in different ways like using charts and tables and this won't help to check that you have the latest version of the document.