Concept:Different types of transport have distinct demerits; the features listed point to a fixed, costly, and damage-prone system used for transporting fluids.
Explanation:Pipelines are very expensive to construct because they require metal pipes and specialised installation over long distances.
They are not flexible because their route is fixed once laid, so they cannot easily be redirected to new locations.
Pipelines carry liquids such as petroleum products and water.
If a pipeline is damaged, the contents leak out, causing spillage and environmental hazards.
Transmission lines carry electricity, so damage would not produce spillage even though they are costly and fixed.
Roads are flexible in routing and do not involve spillage of cargo in the same way as pipelines.
Rope ways are used for passenger or goods movement and are not associated with liquid spillage.
Therefore, all the listed demerits apply to pipelines only.
Answer:A. Pipelines.