A
Airways
B
Roadways
C
Waterways
D
Railways
Solution:
Railways are the largest public sector undertaking in the country. As India's primary means of transportation for both goods and people, railways have grown to be the largest public sector operators in the nation. They are ideal for long distances since they accommodate heavy loads and numerous passengers from various socioeconomic backgrounds. Geographical factors dominate how the railway network is distributed. Indian railways have become the country's lifeline because they link the country's economic life. Due to their accessibility and affordability, trains are used for transportation by wealthy and less wealthy individuals. Train lines connect each city, town, and village.