What statement is true concerning temporary protective grounds used to establish an equipotential zone for the purposes of eliminating the electric shock hazard?

Correct Answer: Option D — A shock hazard exists when there is a difference in potential between conductors or a conductor and hull ground.

Electrical shock hazards aboard vessels arise whenever a potential difference exists between conductors or between any conductor and the metallic hull ground, making equipotential grounding essential for marine technician protection.