Shortcut key used to refresh the current window:

(A) F2
(B) F4
(C) F6
(D) F5

🧠 Explanation:

The shortcut key used to refresh the current window in most web browsers and many applications is **F5**. Pressing F5 reloads the content, ensuring that the latest information is displayed. This is useful for updating web pages, refreshing file explorers, or reloading data without closing and reopening the window. Using this shortcut improves efficiency by quickly updating the view without extra steps. Mastering it helps users stay up-to-date with changing content or troubleshoot display issues effectively.