Which transport mode is described as cheap and efficient for long distances but slow and requiring containers?

• A. Air: fast; expensive
• B. Rail: good for containers; bad for pallets
• C. Sea: cheap and efficient for long distances; slow, need containers
• D. Road: efficient for short journeys; expensive for long journeys

Answer: (C)

Sea transport fits this description because it delivers the lowest cost per ton over long distances, thanks to economies of scale from large ships and high-volume cargo handling. That makes it very efficient for moving goods across oceans. However, it is slower than air or road travel due to longer transit times, port turnaround, and sailing speeds. Cargo is typically moved in standardized containers, which is essential for intermodal handling and protection of goods during long journeys, hence the reference to needing containers. This combination—low long-distance cost and slower overall speed with containerized shipping—is what characterizes sea transport. Air is fast but costly, road is flexible for short trips, and rail can handle containers but isn’t as cost-effective for long-haul sea routes.