What is the primary function of the "Insert Object" feature in PowerPoint?

The "Insert Object" feature in PowerPoint primarily allows users to embed external files, such as Excel spreadsheets, Word documents, or other objects directly into a slide. This functionality enables a seamless integration of various types of content, making it easier to present complex information and maintain the original formatting and interactivity of the embedded file. For example, when an Excel spreadsheet is embedded, it can be edited directly within PowerPoint, allowing for real-time updates and modifications without needing to switch between applications. This feature enhances the versatility of presentations by enabling richer content beyond just standard text and images.

In contrast, the other options refer to distinct functionalities that do not encompass the primary role of the "Insert Object" feature. Adding background music pertains to audio tools, creating new text boxes is related to formatting and layout adjustments, while inserting images from online sources deals with visual content but does not include the embedding of diverse file types.