The correct answer is (d), Sanwal.
Joshi, Chhimwal, and Kapoli are all sub-castes of Brahmins that are based on the name of the place. Joshi is a sub-caste of Brahmins that is found in the Garhwal region of Uttarakhand. Chhimwal is a sub-caste of Brahmins that is found in the Kumaon region of Uttarakhand. Kapoli is a sub-caste of Brahmins that is found in the Malwa region of Madhya Pradesh.
Sanwal is a sub-caste of Brahmins that is not based on the name of the place. It is a sub-caste of Brahmins that is found in the Jaunsar-Bawar region of Uttarakhand.
Brahmins are the highest caste in the Hindu caste system. They are traditionally priests and scholars. There are many different sub-castes of Brahmins, each with its own unique customs and traditions.