The correct answer is (a) Tenth Schedule.
The Tenth Schedule to the Constitution of India, also known as the Anti-Defection Law, was enacted in 1985. It was introduced to prevent defections in Parliament and State Legislatures. The Act provides for the disqualification of a member of Parliament or State Legislature if he/she voluntarily gives up his/her membership of a political party or joins another political party without the prior permission of his/her party. The Act also provides for the disqualification of a member if he/she votes in the House contrary to the whip issued by his/her party.
The Eighth Schedule to the Constitution of India lists the Scheduled Languages of India. The Fifth Schedule to the Constitution of India deals with the administration of tribal areas in India. The Second Schedule to the Constitution of India lists the states and union territories of India.