Final answer:
The maximum mesh opening for a safety net used for fall protection should not exceed 36 square inches, which is none of the options provided.
Step-by-step explanation:
The question pertains to the safety specifications for construction or protective netting. The maximum mesh opening for a safety net is a critical parameter that ensures the net effectively prevents personnel from falling and reduces the severity of an accident. According to the Occupational Safety and Health Administration (OSHA) in the United States, the maximum size for safety net openings should not exceed 36 square inches, nor should any side of the opening be longer than 6 inches. Therefore, none of the options provided (6,000, 8,000, 10,000, 12,000 square inches) are correct for the maximum mesh opening size of a safety net used for fall protection in construction.