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What must you check on a car with a caravan trailer before setting out on a journey?
Whether the lights of the trailer are working
Whether the view through the rear-view mirrors is adequate
Whether the passengers in the caravan trailer have put on their safety belts
Here is Our AI Assistant's Explanation
The selected combination is correct because both options 1 and 2 focus on essential safety checks that must be conducted before towing a caravan trailer. According to German traffic regulations, checking the functionality of the trailer lights is vital for ensuring visibility and signaling to other road users. Additionally, confirming that the view through the rear-view mirrors is adequate is crucial for safe maneuvering and changing lanes, as it helps prevent accidents. Option 3, while important for passenger safety, is not a necessary check specifically related to the vehicle and its trailer's operational readiness before a journey.