The correct answer is A. rebellion.
The Munda rebellion, also known as the Ulgulan, was a tribal uprising against the British Raj in India in the late 19th century. The rebellion was led by Birsa Munda, a Munda tribal leader who was inspired by the teachings of Christianity and Hinduism. The rebels attacked British officials and plantations, and demanded that the British government return their land and resources. The rebellion was eventually suppressed by the British, but it had a significant impact on the history of India.
The term “Ulgulan” means “rebellion” or “uprising” in the Munda language. It is a reference to the violent nature of the rebellion, which was characterized by attacks on British officials and plantations.
The other options are incorrect. Option B, “courageous,” is not a correct definition of the term “Ulgulan.” The rebellion was not motivated by courage, but by a desire to regain control of their land and resources. Option C, “tribal movement,” is also incorrect. The Munda rebellion was not a general tribal movement, but a specific uprising led by Birsa Munda. Option D, “tribal song,” is also incorrect. The Ulgulan was not a song, but a rebellion.