Correct Option: D. Reloading of the active window Explanation of the Correct Answer: When a user presses the F5 key while browsing the internet, it triggers a specific function in most web browsers. This function is known as "refresh" or "reload." Here’s a step-by-step breakdown of what happens:

1. Understanding the Function of F5:
2. The F5 key is commonly associated with refreshing the current page in web browsers. This means that the browser will reload the content of the page you are currently viewing.
3. This is particularly useful if the page has not updated automatically or if you want to see the latest content (like new posts on social media or updated news articles).
4. How Reloading Works:
5. When you press F5, the browser sends a request to the server hosting the webpage to fetch the latest version of that page.
6. The browser then replaces the current content with the new content received from the server, effectively refreshing the page.
7. Common Use Cases:
8. Users often use this function to troubleshoot issues with a webpage that may not be displaying correctly or to see new updates without manually navigating away and back to the page.

Why the Other Options are Incorrect:

• Option A: Opening of a new tab:
• This is incorrect because pressing F5 does not open a new tab. The action associated with opening a new tab is typically done using Ctrl + T (or Command + T on Mac). F5 is specifically for refreshing the current page.
• Option B: Closing of the active window:
• This option is also incorrect. Closing the active window is usually done by pressing Ctrl + W (or Command + W on Mac). F5 does not have any function related to closing windows; it solely refreshes the content of the current page.
• Option C: Closing of all windows:
• This option is incorrect as well. Closing all windows is not a function associated with the F5 key. Instead, this action is typically performed using Alt + F4 (or Command + Q on Mac). F5 does not affect the state of windows; it only refreshes the content of the active window.

Summary of Key Points:

• F5 Key Function: Pressing F5 refreshes or reloads the current webpage in a browser.
• Common Usage: It is used to see the latest updates on a webpage or to fix display issues.
• Incorrect Options:
• A: New tab (use Ctrl + T)
• B: Close active window (use Ctrl + W)
• C: Close all windows (use Alt + F4)
• Browser Behavior: Refreshing may also clear temporary data, depending on the browser settings, but it does not close any windows or tabs.

This understanding of the F5 key's function is essential for effective web browsing and troubleshooting.