Concept:The President of India has the constitutional power to nominate 12 members to the Rajya Sabha for their expertise in fields like art, literature, science, and social service.Explanation:The Rajya Sabha is a permanent house that is never dissolved. Its maximum strength is 250 members. Out of these, 238 members represent states and union territories. The remaining 12 members are nominated by the President. Nominated members have the same rights as elected members. They serve a 6-year term. One-third of all members retire every two years. To be a Rajya Sabha member, a person must be an Indian citizen, at least 30 years old, and meet other qualifications set by Parliament. The Vice President is the ex-officio Chairman of the Rajya Sabha but does not nominate members. The Prime Minister and Chief Justice have no role in nominations.Answer:Option A: The President