During which step does the server send the requested resource back to the browser?

In the process of web communication, the Response step is crucial because it is the moment when the server sends the requested resource back to the browser. Once the browser has initiated a request for a resource, typically through inputting a URL, it waits for the server to respond. During the Response step, the server sends back the designated information or resource, such as HTML, images, or data, which the browser then renders for the user to view.

This is the key moment of interaction where the user's request is fulfilled, marking the transition from a request being made to the actual content being delivered. The other steps involve stages prior to this, such as formulating the initial request (the Request step) and loading the content into the browser (the Load step), but it is specifically during the Response step that the resource transfer takes place.