Which of the following mode of transport has the lowest energy cost?

The correct answer is Option (1) → Water Transport

Water transport has the lowest energy cost among all modes of transport. This is because:

• Ships and boats can carry large quantities of cargo over long distances using relatively less fuel.

• It is more fuel-efficient than road, rail, or air transport when measured by energy consumed per ton-kilometer.

"One of the great advantages of water transportation is that it does not require route construction. The oceans are linked with each other and are negotiable with ships of various sizes. All that is needed is to provide port facilities at the two ends. It is much cheaper because the friction of water is far less than that of land. The energy cost of water transportation is lower."