Which are ways that many countries transport surface water

Most of the surface water is transported from one place to another in two ways in general. One way being the pipelines, and the other being the conventional transportation vehicles.

Most of the surface water is transported by pipelines. They are installed at a spring and are delivering water to numerous settlements through a very dense net of pipes. The second most used way for transportation of the water are the conventional transportation vehicles. The trucks and the trains are the ones that used for most of the transportation of the water, though it has to be said that that is bottled water, so through them the water is brought to places that do not have enough water or have problems with the quality of the water.

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.