What type of test should be performed prior to running the program in continuous?

The step test is the appropriate choice before running a program in continuous mode because it allows for the examination of the program’s functionality in smaller, more manageable increments. This testing method helps to identify any potential issues, errors, or unexpected behavior in specific segments of the program rather than the entire program at once.

By conducting a step test, operators can closely monitor the machine's response to each individual command or action, ensuring that each step performs as intended. This approach minimizes risk and enhances safety during the initial execution phases, particularly when the program may involve complex paths or operations that could potentially lead to errors if initiated continuously.

In contrast, routines and simulations may not provide the granularity needed to spot specific programming errors, while a system check typically focuses on verifying the overall integrity of the equipment and its systems rather than testing specific program commands. Therefore, the step test is a critical preparatory step to ensure a smooth transition to running the program continuously.