Which command is used to delete all the files extension .txt on the current drive and directory? A. Del .txt B. Erase .txt C. Del *.txt D. Del *.*/p

The correct answer is C. Del *.txt.

The command “Del .txt” will delete all the files with the extension .txt in the current directory. The asterisk () is a wildcard character that matches any number of characters, so “Del *.txt” will delete all files with the extension .txt, regardless of their name.

The command “Del .txt” will delete only the file named .txt. The command “Erase .txt” is equivalent to “Del .txt”. The command “Del ./p” will delete all files in the current directory and all subdirectories.

Here is an example of how to use the command “Del *.txt”:

“`
C:>del *.txt

Are you sure (Y/N)? y

Deleting file: C:\test.txt

Deleting file: C:\another.txt

2 files deleted.
“`

In this example, the command “Del *.txt” was used to delete all the files with the extension .txt in the current directory. The two files “test.txt” and “another.txt” were deleted.