The Chenani-Nashri tunnel is a major project aimed at improving:

Irrigation
Power generation
Transportation
Telecommunications

The correct answer is: c) Transportation.

The Chenani-Nashri tunnel is a 8.45 km long two-lane bi-directional highway tunnel in the Indian state of Jammu and Kashmir. It is the longest road tunnel in India and Asia. The tunnel is located on the Jammu-Srinagar National Highway (NH-44) and reduces the travel time between Jammu and Srinagar by about two hours. The tunnel was built to improve the transportation infrastructure in the region and to provide a safe and reliable route for commuters.

The other options are incorrect because:

  • Irrigation is the process of providing water to crops. The Chenani-Nashri tunnel is not a project aimed at improving irrigation.
  • Power generation is the process of producing electricity. The Chenani-Nashri tunnel is not a project aimed at improving power generation.
  • Telecommunications is the transmission of information over long distances using electronic signals. The Chenani-Nashri tunnel is not a project aimed at improving telecommunications.