Tamil Nadu has a well-developed network of:

Roads and railways
Ports and airports
Power generation and transmission
All of the above

The correct answer is: d) All of the above.

Tamil Nadu has a well-developed network of roads, railways, ports, and airports. The state has a total road length of over 1.2 million kilometers, which is the second-highest in India. The state also has a well-developed railway network, with over 3,000 kilometers of track. Tamil Nadu has two major ports, Chennai and Ennore, and two international airports, Chennai and Coimbatore. The state also has a number of power plants, which generate electricity for domestic and industrial use.

The state’s well-developed infrastructure has helped to boost economic growth and development. Tamil Nadu is one of the most industrialized states in India, and it is also a major exporter of goods and services. The state’s infrastructure has also made it a popular destination for foreign investment.

Here is a brief description of each option:

  • Roads and railways: Tamil Nadu has a total road length of over 1.2 million kilometers, which is the second-highest in India. The state also has a well-developed railway network, with over 3,000 kilometers of track.
  • Ports and airports: Tamil Nadu has two major ports, Chennai and Ennore, and two international airports, Chennai and Coimbatore.
  • Power generation and transmission: The state also has a number of power plants, which generate electricity for domestic and industrial use.