Final answer:
The Object tool on the Design tab is used to add an object, such as a Microsoft Excel spreadsheet, into a document.
Step-by-step explanation:
To add an object from another application, such as a Microsoft Excel spreadsheet, into a document from within the Design tab, you would use the Object tool. The Object tool on the Design tab is used to add an object, such as a Microsoft Excel spreadsheet, into a document. This option allows you to either embed the object into your document or link to the original file. Embedding the object inserts it into the document, making it part of the document.
Linking the object creates a reference to the file, allowing it to update when changes are made to the original. This approach is particularly useful when you need to include dynamic, non-static data, like complex tables or charts that originate from Excel. It is important to note that the Design tab is specific to certain Microsoft Office applications like Word and PowerPoint, and the steps to add an object might vary slightly between them.