Final answer:
An example of a process modification supported by the Hawthorne studies is illumination, highlighting the Hawthorne effect where any change in worker conditions accompanied by attention can boost productivity.
Step-by-step explanation:
An example of a process modification that would be supported by the Hawthorne studies is b. illumination. An example of a process modification supported by the Hawthorne studies is illumination, highlighting the Hawthorne effect where any change in worker conditions accompanied by attention can boost productivity. The original Hawthorne experiments found that any change in a variable, such as lighting levels, led to an improvement in productivity; this was true even when the change was negative. This concept, known as the Hawthorne effect, suggests that the mere attention given to workers by researchers or supervisors resulted in a temporary increase in productivity. Thus, modifying the illumination could potentially lead to increases in worker performance simply due to the change itself and the associated attention from researchers or supervisors.