Answer :
Answer:
c. railroads
Explanation:
- A water carrier carries both people and goods using waterways or sea routes.
- One of the main competitor for the movement of grain, coal and ores that are bulk products are the railroads.
- The competitor exists because majority of the places where it is possible to reach by waterways are also accessible via railroads.
- For example, the grains can be moved from midwest to New Orleans by both means.
- Similarly, coal can also be transported by both ways, some of the states where coal is produced and transported by this route is West Virginia, Pennsylvania and Kentucky.