The Central Cabinet is an important part of the executive branch of the Indian government. It consists of the Prime Minister, who is the head of the government, and other ministers who are responsible for various departments and ministries. The Central Cabinet plays a crucial role in the decision-making process and governance of the country.

The correct answer to the question is option 'D' - 1 only. This means that the Central Cabinet includes only the Prime Minister and does not include the Minister of State with Independent charge or the Cabinet Secretary.

Explanation:

1. Prime Minister:
The Prime Minister is the head of the government and the leader of the ruling political party or coalition. They are appointed by the President of India and are responsible for the overall governance of the country. The Prime Minister is the most powerful executive authority in the country and is responsible for leading and coordinating the work of the Central Cabinet.

2. Minister of State with Independent charge:
A Minister of State with Independent charge is a minister who is responsible for a specific department or ministry and does not report to any other minister. They have the authority to make decisions and implement policies related to their respective ministries. However, it is important to note that the Central Cabinet does not necessarily include all Ministers of State with Independent charge.

3. Cabinet Secretary:
The Cabinet Secretary is the senior-most civil servant in the country and acts as the administrative head of the government. They are responsible for coordinating the work of the various ministries and implementing the decisions taken by the Central Cabinet. While the Cabinet Secretary is an important position in the government, they are not a member of the Central Cabinet.

In conclusion, the correct answer to the question is option 'D' - 1 only. The Central Cabinet includes only the Prime Minister and does not include the Minister of State with Independent charge or the Cabinet Secretary.