Explanation:

Rajya sabha is called the counsel of the states or upper house of the Indian parliament.  Article 80 of the Constitution lays down the maximum strength of Rajya Sabha as 250, out of which 12 members are nominated by the President and 238 are representatives of the States and of the two Union Territories. The allocation of seats is made on the basis of the population of each State. Assam, Goa, Manipur, Meghalaya, Mizoram, Nagaland, Puducherry, Sikkim, Tripura and Arunachal Pradesh are states/Union territory which sends only one representative to the Rajya Sabha. Hence option 4th is correct.