Correct Answer: (a) Tharu
Solution:The tribe with a maximum population (as per 2001 census) in Uttar Pradesh was Tharu. Tharu constituted 77.4 percent of the total scheduled tribes (5 tribes) population of the state. After the formation of Uttarakhand, 10 other castes were provided with the status of scheduled tribes in 2003. Thus, presently Gond community is the largest tribal community (5,69,035) of the state of Uttar Pradesh kharwar community (1,60,676) and Tharu community (105, 291) comes next after that. Notably, an only Tharu tribe of Tharu community dwells in Uttar Pradesh while the Gond, Dhuriya, Nayak, Ojha, Pathari and Rajgond are included in the Gond community. Kharwar community also consists of Kharwar and Khairwar tribe. If a tribe is meant the community of tribes, Kharwar is the largest tribes.