Google Certified Educator Level 2 Practice Exam

Add-ons in Google Docs enhance the application's functionality by incorporating external tools and services developed by third parties. This means that users can tailor their documents with features and capabilities that are not natively available in Google Docs. For instance, add-ons can help with tasks such as creating charts, generating bibliographies, or integrating other services like grammar checkers and citation tools, making the workflow more efficient and customized to specific needs.

The other options involve functionalities that Google Docs does not support. Designing web pages is typically outside the scope of document editing tools, while creating database systems relates more to database management software rather than document processing. Managing online presentations is more aligned with Google Slides, which is a separate tool dedicated to creating and sharing presentations rather than text documents. Therefore, the functionality of add-ons is precisely about expanding what Google Docs can do through the integration of additional resources and tools.