The _____ switch instructs DOS to display the directory list in a wide format. A. /W B. /O C. /P D. /B E. None of the above

The correct answer is A. /W.

The /W switch instructs DOS to display the directory list in a wide format. This means that the names of the files and folders will be displayed on multiple lines, with each line containing a maximum of 80 characters. This can be useful if you want to see a list of all the files and folders in a directory without having to scroll horizontally.

The other options are incorrect. The /O switch specifies the order in which the files and folders are displayed. The /P switch pauses after each screenful of output. The /B switch displays only the names of the files and folders, without any additional information.