Why would you use goo.gl with a Google Sites URL?

Using goo.gl with a Google Sites URL is beneficial because it creates a short URL that is easy for students to type into the address bar. When sharing links to resources, especially with students who may be less familiar with technology, a long and complex URL can be challenging to communicate and remember. A shortened URL simplifies the process, making it more user-friendly.

This ease of access can enhance participation and reduce errors when students attempt to navigate directly to the provided site. By shortening the URL, it becomes more manageable, thus encouraging engagement and ensuring that students can get to the intended web resource without difficulty.

The other choices do not directly relate to the functionality that goo.gl provides in this context. For instance, while a shorter URL can improve aesthetics and can be easier to share, it doesn't inherently enhance the editing access options or allow for custom domain purchases, which pertain to different aspects of web management and access rather than the streamlined sharing of URLs.