Which command would likely be used to exit a program running on a FANUC robot?

The command used to exit a program running on a FANUC robot is typically the one that directly indicates stopping the execution of the current program. In many programming interfaces, the command to halt or stop the ongoing operations is specifically designed to ensure that all processes are safely and effectively terminated.

In this context, 'STOP' is the most appropriate command as it explicitly conveys the action of halting the program. It is commonly used in various programming environments to indicate that no further instructions should be executed, making it a standard practice to use this command for stopping programs, including those on FANUC robots.

Other commands like 'EXIT,' 'END,' or 'TERMINATE' might suggest ending or closing a program but do not clearly denote the action of stopping the execution in the same straightforward manner as 'STOP.' These terms can have varied meanings in different programming languages or contexts, which may lead to confusion about their exact effects. Therefore, using 'STOP' for exiting a program is the most recognizable and effective approach within the FANUC programming paradigm.