Explanations:The question pertains to a specific historical event in Indian politics, specifically the vote of confidence in the Lok Sabha in April 1999. The vote of confidence is a crucial parliamentary procedure in India, where the government's legitimacy is tested by a vote in the Lok Sabha. If the government loses the vote, it must resign or face a no-confidence motion.
In the context of Odisha, Biju Patnaik was a significant political figure who served as the Chief Minister of Odisha multiple times. He was a member of the Biju Janata Dal (BJD) and was known for his contributions to the state's development and his role in Indian politics. During the vote of confidence in April 1999, Biju Patnaik was the Chief Minister of Odisha and participated in the vote.
The other options listed in the question are also political figures from Odisha, but they were not the Chief Minister during the time of the vote of confidence. Nandini Satpathi was a Member of Parliament but not the Chief Minister. Giridhar Gomango had served as the Chief Minister but had resigned by the time of the vote. Tathagata Satpathy would later become the Chief Minister but was not in that position in April 1999.
Understanding the political context and the timeline of events is crucial for answering such questions correctly. It is important to be aware of the political figures and their roles during specific historical events, as this knowledge is often tested in competitive examinations and general knowledge quizzes.