In which year was Project Tiger launched in India?

The correct option is 1973.

Project Tiger is a major wildlife conservation initiative launched by the Government of India to protect the dwindling population of Bengal tigers.

The project was officially launched on April 1, 1973, during the tenure of Prime Minister Indira Gandhi, and was initiated from the Jim Corbett National Park in Uttarakhand. The primary objectives of Project Tiger are to ensure a viable population of tigers in India for scientific, aesthetic, cultural, and ecological values, and to preserve areas of biological importance as a natural heritage for the benefit of ecosystems and future generations.