Outline the basic steps for a safe jump-start of a bus with a discharged 12V battery.

• A. Ensure safety PPE, connect donor positive to battery positive, then donor negative to chassis ground away from the battery, start the donor engine, then remove cables in reverse order.
• B. Do not wear PPE and connect negative to positive.
• C. Begin by starting donor engine before connecting cables.
• D. Connect donor negative to battery negative.

Answer: (B)

The safe jump-start approach hinges on correct polarity and grounding to minimize sparks and avoid short circuits. Start by wearing proper PPE to protect eyes and skin. Connect the donor vehicle’s positive terminal to the bus’s positive 12V battery terminal. Then attach the donor’s negative terminal to a solid metal ground on the bus away from the battery (not to the battery terminal). This grounding method reduces the chance of sparks near the battery, where hydrogen gas can be present. Start the donor engine and, after a moment, attempt to start the bus. Once the bus runs, remove the cables in the reverse order of connection: first disconnect the ground from the chassis, then disconnect the positive connection. This sequence helps safely break the circuit without sparking near the battery. The other options are unsafe or incorrect because they either create a short, skip essential safety steps, or place connections in risky locations.