Which action best represents uploading on a social media platform?

The action of posting a video best represents uploading on a social media platform because it involves transferring a file from your device to the platform, making it available for others to view and interact with. Uploading typically refers to the process of sending data, such as images, videos, or documents, from a local system to a remote system, which, in this case, is the social media platform. By choosing to post a video, you are actively creating content that is shared with your audience, highlighting the essence of uploading as a simple act of data transfer to enhance user engagement on the platform.

In contrast, changing your profile picture or editing a post may involve modifying existing content but doesn't necessarily involve transferring new data from your device to the platform. Similarly, removing a friend pertains to adjusting social connections rather than sharing or uploading content. Thus, posting a video distinctly captures the process of uploading in the context of social media activities.