Q.Which mode of transport is used specifically for the continuous movement of liquids and gases such as crude oil and natural gas?

One mode of transport is defined specifically by the physical state of what it carries, rather than by the distance or cargo weight involved. …

Pipeline transport is the mode specifically used to move liquids and gases — crude oil, refined petroleum products, and natural gas — continuously through a network of pipes, often over very long distances, offering a steady flow at low ongoing operating cost. Water, rail and road transport (options a, b, d) are general-purpose modes for solid cargo and passengers and are not …

Overlooking pipeline as a distinct mode of transport and assuming liquids/gases must always travel by road/rail tanker — pipeline is the dedicated, purpose-built mode …