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Final answer:The correct option is 3) coil it to keep it out of the way. After disconnecting the electrical cable during uncoupling, one should coil the cable to keep it out of the way, ensuring safety and proper storage. Correctly wiring a 3-pin plug involves knowing the color codes for wires and securely attaching each wire to its respective pin.Explanation:During uncoupling, after disconnecting the electrical cable, you should coil it to keep it out of the way. Coiling the cable prevents tripping hazards and potential damage to the cord and plug. It is important for safety purposes to securely store the cable after use. When wiring a 3-pin plug, ensure to follow safety precautions such as confirming the color coding for your region's live/hot, neutral, and ground wires, disconnecting the appliance from power before beginning, and properly attaching each wire to its respective pin—green and yellow (earth) to the top, blue (neutral) to the right, and brown (live) to the left when viewed from underneath the plug. After ensuring that the copper wires are tightly twisted and securely fastened under the screws in the plug's pins, replace the plug cover. Always verify that you are following correct procedures and regional electrical codes to ensure safety when working with electrical components....