They are very expensive to construct, they are not flexible spillage can occur in cause of damage. These are the demerits of what type of transport?
Pipelines
Transmission lines
Roads
Rope ways
Correct answer is A
Pipelines carry petroleum products and when damaged, spillage occurs. They are also not flexible as their paths are specific and also are made of metals which is very costly.
Transmission lines carry electric power, roads are flexible, rope ways are not expensive to construct