Under whose leadership was the 42nd Amendment Act passed?

Indira Gandhi

The correct answer is Option 3 - Indira Gandhi

The 42nd Amendment Act was passed during the period of Prime Minister Indira Gandhi's leadership.
The 42nd Constitutional Amendment Act, also known as the Mini Constitution, was one of the most comprehensive amendments to the Indian Constitution. It made significant changes, including the addition of the Fundamental Duties, to promote social, economic, and political ideals in the country.