Correct option is B
The 91st Amendment Act, 2003 of the Indian Constitution brought several significant changes, particularly with respect to the size of the Council of Ministers and the anti-defection law. Key provisions include:
Limiting the size of the Council of Ministers: This amendment restricted the number of ministers, including the Prime Minister or Chief Minister, in the Central and State governments. The number of ministers cannot exceed 15% of the total number of members in the Lok Sabha or the respective State Legislative Assemblies.
Anti-defection law enforcement: It strengthened the provisions of the Tenth Schedule (anti-defection law) by disqualifying defectors from holding any ministerial position.