What is the indication that a document's readiness status is set to "Finished"?

The indication that a document's readiness status is set to "Finished" is represented by the state known as "DOM complete." This status signifies that the HTML document has been fully loaded and parsed, allowing scripts to execute and the page structure to be available for interaction. At this stage, all resources such as images or scripts may still be loading, but the critical aspect is that the document's structure is now accessible, enabling developers to manipulate the DOM.

In contrast, the other options refer to different stages or metrics in the loading process. "DOM interactive" indicates that the document has been loaded enough to allow for user interaction but hasn't fully finished. "Load event start" marks the beginning of the loading of all elements on the page, but it does not confirm that loading is complete. "User action duration" measures the time actions take from a user's perspective but does not directly correlate with the document's readiness status. Understanding these distinctions is vital for monitoring and optimizing web performance.