As per the Constitution ninety-first amendment act, 2003, the total number of Ministers, including the Chief Minister, in the Council of Ministers in a State cannot exceed ______ of the total number of members of the Legislative Assembly of that State.

15%

The correct answer is Option 1 - 15%

The total number of Ministers, including the Chief Minister, in the Council of Ministers in a State shall NOT exceed 15% of the total number of members of the Legislative Assembly of that State.

It is stated in Article 164(1A) of the Indian Constitution, which specifies that the total number of Ministers, including the Chief Minister, in the Council of Ministers in a State shall not exceed 15% of the total number of members of the Legislative Assembly of that State.