For an electro-hydraulic cargo-handling pedestal-type deck crane, what event would result in an immediate stop to all crane motions, including slewing, hoisting, and luffing?

Correct Answer: Option C — All motions are stopped by the loss of electric power to the crane.

Electro-hydraulic cranes rely on continuous electrical power for control circuits and solenoid-operated valves. A loss of power de-energizes these critical control components, causing the hydraulic system to default to a safe state, which immediately halts all crane motions to prevent uncontrolled movement or accidental load drops.