What is a good practice when leaving an operating equipment unattended? (A Record the equipment using a video camera so you can review the observations while you are away B Ask another student in the...

Extracted text: What is a good practice when leaving an operating equipment unattended? (A Record the equipment using a video camera so you can review the observations while you are away B Ask another student in the next room to supervise the equipment for you C) Leave a note that says "I'll be back in a few minutes. Thank you!" D Provide fail safe provisions with your phone number to contact in case of emergency