Explanation:

Article 75 of the Indian Constitution provides for the appointment, tenure, responsibility, qualification, oath, and salaries and allowances of the ministers. As per Article 75, the Prime Minister shall be appointed by the President and the other Ministers shall be appointed by the President on the advice of the Prime Minister. • The total number of ministers, including the Prime Minister, in the Council of Ministers shall not exceed 15% of the total strength of the Lok Sabha. This provision was added by the 91st Amendment Act of 2003. • The Council of Ministers consists of three categories of ministers, namely, cabinet ministers, ministers of state, and deputy ministers. At the top of all these ministers stands the Prime Minister. Thus, the Minister of State is a part of the Central Council of Ministers. Hence option 2 is correct. • The Cabinet Ministers head the important ministries of the Central government like home, defense, finance, external affairs, and so forth. • Ministers of State can either be given independent charge of ministries/ departments or can be attached to cabinet ministers. Hence, option 1 is not correct. • As the Ministers of State are a part of the Central Council of Ministers and they are appointed by the President on the recommendations of the Prime Minister. Hence, option 3 is not correct.