Question

multiple choice
_____ are placed on dangerous machinery to detect motion, light, heat, pressure, or other stimulus. their presence helps to protect operators from injury while working on machines.

labels

alarms

mirrors

sensors

Explanation:

Labels only provide warnings, not detection. Alarms alert after a trigger but don't detect stimuli. Mirrors only improve visibility. Sensors are designed to detect motion, light, heat, pressure, and other stimuli, and are used on machinery to protect operators by triggering safety responses.

Answer:

D. Sensors