Correct Answer: (d) Chandigarh, Sikkim, Mizoram
Solution:Chandigarh, Sikkim, and Mizoram is a group of State/Union Territories that have been allocated only one seat each in the Lok Sabha. Other states or Union Territories which have only one seat are, Andaman and Nicobar Island, Lakshadweep, Nagaland, and Puducherry.