The correct answer is option 4, which is six years. The term of a Member of the Rajya Sabha, which is the upper house of the Indian Parliament, is six years. This means that once a member is elected or nominated to the Rajya Sabha, they will hold their position for a period of six years. It is important to note that the Rajya Sabha has a continuous rotation system where one-third of its members retire every two years. This ensures a degree of continuity in the functioning of the house while allowing for regular new appointments. Therefore, the correct term for a Member of the Rajya Sabha is six years.