The correct answer is: A. Doskey
Doskey is an internal command, while the others are external commands.
An internal command is a command that is built into the operating system and does not require a separate program to be executed. An external command is a command that is stored in a separate file and must be executed by a program called a command interpreter.
Doskey is an internal command that allows you to create macros, edit command lines, and recall previous commands.
Verify is an external command that verifies that a file has been written correctly to disk.
Print is an external command that prints a file to the printer.
Find is an external command that searches for a specified text string in a file or group of files.