Final answer:
The statement regarding Git's use of 'origin' as a default placeholder for the URL of a remote repository is true. 'Origin' is set up automatically when cloning a repository, and multiple remotes can be configured using unique names.
Step-by-step explanation:
The statement is true. In Git, origin is indeed a default placeholder name for the URL of the remote repository. This default remote reference, origin, is automatically created by Git when you clone an existing repository, which allows you to refer to the remote repository without typing the full URL every time you interact with it. Additionally, it is possible to configure multiple remote repositories for a single local repository, each with a unique name, not just origin. This can be done using the git remote add command followed by the desired remote name and the URL of the new remote repository.