Detailed explanation and options for the selected question.
The Rajya Sabha has the power to ratify treaties signed by the President on behalf of India. Option "To enact laws on matters in the Union List" is incorrect as this power lies with both Lok Sabha and Rajya Sabha together, but it is not exclusive to Rajya Sabha. Option "To impeach the President" is incorrect as impeachment of the President requires a resolution passed by both Houses of Parliament. Option "To approve the budget" is not a specific power of Rajya Sabha, as it is primarily the role of Lok Sabha.