Which of the following is a disadvantage of automated paint lines?

The correct answer identifies higher paint waste as a disadvantage of automated paint lines. Automated systems typically apply paint in a precise and controlled manner, yet they can also lead to significant waste if not correctly configured. For example, if the system oversprays or if the paint application is too thick, excess paint may be lost rather than adhering to the intended surface.

Additionally, automated lines may not adjust efficiently for variations in part geometry, leading to situations where more paint than necessary is applied to achieve the desired coating thickness or finish quality. This can be exacerbated by the need for frequent maintenance and calibration of the equipment to ensure optimal performance, which can also contribute to increased waste.

In contrast to the other options, the statement about higher paint waste directly relates to a practical operational concern associated with the automation of painting processes, demonstrating how efficiency measures need to be balanced with resource management in order to minimize waste while maximizing productivity.