Which of the following contains the guidelines for safety in the ship's laundry?

The guidelines for safety in the ship’s laundry are found in OPNAVINST 5100.19. This instruction focuses on the safety and health programs within the Navy and provides comprehensive regulations for ensuring a safe working environment across various Navy operations, including the laundry facilities on ships. This document outlines procedures and safety measures to minimize risks associated with laundry operations, such as handling chemicals, managing equipment safely, and ensuring personnel are protected from hazards commonly found in a laundry setting.

Other options may address different aspects of Navy operations or health matters, but they do not specifically cover the safety guidelines related to laundry operations on ships. OPNAVINST 6100.6 pertains to the Navy's health maintenance and physical readiness, while NAVSUPINST 14200.1 and COMNAVSUPINST 14300.2 relate to supply systems and management, which are not focused specifically on safety in laundry facilities.