Final answer:
A sleeper berth is a designated sleeping area in a truck, not the back seat of a bus or a reclining seat. It is important for truck drivers' safety and well-being during long-haul journeys.
Step-by-step explanation:
The correct answer is d. A. and B are correct. A sleeper berth does not include the back seat of a bus or a reclining seat. Instead, it refers to a designated area of your truck designed for sleeping. A sleeper berth is typically found in long-haul trucks to provide a comfortable resting space for truck drivers during their journeys. It is an essential feature that helps ensure their safety and well-being on the road.