The correct answer is (a) Pithoragarh.
The first leper asylum in British Kumaun was set up in Pithoragarh in 1886. It was established by the British government in order to provide care and treatment for people with leprosy. The asylum was initially located in a small building, but it was later expanded to accommodate more patients. It was one of the first leper asylums to be established in India, and it played an important role in providing care and treatment for people with leprosy.
The other options are incorrect. Lohaghat is a town in the Pithoragarh district of Uttarakhand, India. Almora is a city in the Kumaon region of Uttarakhand, India. Dehradun is the capital of Uttarakhand, India.