The correct answer is (d) Arjun Kumar Dev.
Arjun Kumar Dev is a member of the Indian National Congress and won the by-election held at Bageshwar in Uttarakhand in September, 2023. He defeated his nearest rival, Chandan Das of the Bharatiya Janata Party, by a margin of 10,000 votes.
Dev is a former MLA from the Bageshwar constituency and has been a member of the Congress party since 1998. He is a popular leader in the region and is known for his work in the field of education and health.
The by-election was held after the death of sitting MLA Suresh Singh Negi in July, 2023. Negi was a member of the Congress party and had been MLA from the Bageshwar constituency since 2012.
The by-election was seen as a test of the popularity of the Congress party in the state of Uttarakhand. The party had lost the 2022 assembly elections to the Bharatiya Janata Party and was looking to regain lost ground.
The victory of Arjun Kumar Dev is a boost for the Congress party in Uttarakhand. It shows that the party is still popular in the state and is capable of winning elections. The victory is also a personal triumph for Dev, who has been a popular leader in the region for many years.