The correct answer is (d), Tharu.
The Tharu are an ethnic group native to the Terai region of Nepal and India. They are the largest ethnic group in the Indian state of Uttarakhand. The Tharu are a scheduled tribe in India, which means they are officially recognized as a group that has been historically discriminated against.
The Tharu are a predominantly agricultural people. They grow rice, wheat, maize, and other crops. They also raise cattle, buffalo, and goats. The Tharu are known for their traditional music and dance.
The Tharu are a matrilineal society, which means that property and inheritance are passed down through the female line. The Tharu are also a polyandrous society, which means that a woman can have multiple husbands.
The Tharu are a diverse group with a rich culture. They are a significant part of the population of Uttarakhand and Nepal.
The other options are incorrect because they are not scheduled tribes that reside in Bijnor district.
(a) Baiga are an ethnic group native to the central Indian states of Madhya Pradesh, Chhattisgarh, and Jharkhand. They are a scheduled tribe in India.
(b) Kharwar are an ethnic group native to the central Indian states of Madhya Pradesh and Chhattisgarh. They are a scheduled tribe in India.
(c) Mahigir are an ethnic group native to the Indian state of Uttar Pradesh. They are a scheduled caste in India.