Mrs Rajitha is eligible to contest for Lok Sabha but not eligible for contesting for membership in Rajya Sabha. Identify the probable reason _____________________.

The correct option is C She might not have completed 30 years age
Article 84 of the Constitution lays down the qualifications for membership of Parliament. A member of the Rajya Sabha must:
• Be a citizen of India
• Make and subscribe before some person authorized in that behalf by the Election Commission an oath or affirmation according to the form set out for the purpose in the Third Schedule to the Constitution
• Be at least 30 years old
• Be elected by the Legislative Assembly of States and Union territories by means of the single transferable vote through proportional representation
• Have their name present on the voters' list
• Not be a proclaimed criminal
• Not be an insolvent
• Not hold any other office of profit under the Government of India
• Not be of unsound mind
• Possess such other qualifications as may be prescribed in that behalf by or under any law made by Parliament