Who has taken oath as Bihar Chief Minister for 8^th time?

Nitish Kumar

The correct answer is Option (4) - Nitish Kumar

Nitish Kumar has taken the oath as Bihar Chief Minister for the 8^th time. Nitish Kumar first became Chief Minister of Bihar in March 2000, then again in November 2005, and continued to serve until May 2014. He regained the position in February 2015 after forming an alliance with the Bharatiya Janata Party (BJP) and served until November 2020. After the 2020 Bihar Legislative Assembly elections, Nitish Kumar was sworn in as the Chief Minister for his eighth term in November 2020, leading a coalition government comprising his Janata Dal (United) party along with the BJP and other smaller parties.