Final answer:
The provided keyboard shortcuts (Ctrl + D, Ctrl + N, Ctrl + S, Ctrl + R) do not perform the same function as the down arrow key. Each shortcut has a different standard function in most applications, such as bookmarking a page, opening a new document, saving a file, or refreshing a webpage.
Step-by-step explanation:
The correct answer to which keyboard shortcut does the same thing as the down arrow is none of the options provided: Ctrl + D, Ctrl + N, Ctrl + S, or Ctrl + R. Typically, pressing the down arrow key on a keyboard moves the cursor or selection down one line. Alternatively, when dealing with lists or navigating through a webpage, the down arrow can also be used to move downwards through items or scroll the page. However, the keyboard shortcuts provided:
- Ctrl + D typically bookmarks the current page in web browsers or duplicates the current line in some text editors.
- Ctrl + N generally opens a new window or document in many software applications.
- Ctrl + S is commonly used to save the current document or file.
- Ctrl + R usually refreshes the current webpage in web browsers or repeats the last action in some programs.
Therefore, there is no correct answer among the options given. It is possible that different software applications assign different functions to these keyboard shortcuts, but in terms of general application across most software, these shortcuts do not replicate the function of the down arrow key.