HIMURJA works in the field of

Renewable energy
Power sector
Afforestation
Smart cities

The correct answer is A. Renewable energy.

HIMURJA stands for “High-Altitude Wind Energy Research Station”. It is a research station of the Indian Institute of Technology Bombay, located in Leh, Ladakh. The station was established in 1986 to study the feasibility of using wind energy in the Himalayas. HIMURJA has installed a number of wind turbines at the station, and has conducted extensive research on wind energy in the region. The station has also developed a number of technologies for using wind energy in the Himalayas.

The other options are incorrect because:

  • B. Power sector is a broad term that covers a wide range of activities, including the generation, transmission, and distribution of electricity. HIMURJA is a research station that focuses on a specific aspect of the power sector, namely renewable energy.
  • C. Afforestation is the process of planting trees in an area where there were previously no trees. HIMURJA is a research station that focuses on a different aspect of the environment, namely renewable energy.
  • D. Smart cities are cities that use information and communication technologies (ICT) to improve the quality of life for their citizens. HIMURJA is a research station that focuses on a different aspect of technology, namely renewable energy.