Concept:Agriculture depends on the efficient movement of inputs and farm produce, so solving transportation problems requires a reliable system that can carry bulk goods over long distances.
Explanation:The main transportation problem in agriculture is moving bulky farm produce from rural farms to urban markets and storage centres.
Tractor hiring units assist with land preparation and farm operations, but they are not designed to transport large quantities of produce to distant markets.
Car hire units are meant for passenger movement, not for carrying bulky agricultural goods economically.
Extension services provide farmers with technical advice, education, and information, but they do not physically move produce.
An efficient railway system offers a large-scale, reliable, and cost-effective means of transporting agricultural produce across long distances.
Railways reduce post-harvest losses, link farming areas to major markets, and lower the cost of distribution.
Therefore, among the given options, an efficient railway system directly addresses agricultural transportation problems.
Answer:B. Efficient railway system