Technician A says wearing a long necklace in the shop is a good safety practice. Technician B says long hair is acceptable while working around moving engine parts. Who is right?

In this scenario, both technicians are incorrect regarding their safety practices. Wearing a long necklace in the shop poses a significant safety risk, as it can get caught in machinery, leading to serious injury. Jewelry is generally discouraged in shop environments for this reason.

Similarly, having long hair in close proximity to moving engine parts is also unsafe. Long hair can easily become entangled in equipment, which can lead to accidents or injuries. Safety guidelines recommend that individuals with long hair either tie it back or use appropriate headgear to prevent any such hazards.

Thus, both statements made by Technician A and Technician B contradict established safety practices in automotive environments, making neither of them correct.