Sikkim was made the full fledged state of Union of India by : A. The 35th constitutional Amendment Act (1975). B. The 37th constitutional Amendment Act (1975). C. The 38th constitutional Amendment Act (1975). D. The 36th constitutional Amendment Act (1975).

The correct answer is: A. The 35th constitutional Amendment Act (1975).

Sikkim was a monarchy until 1975, when it became the 22nd state of India. The 35th constitutional Amendment Act, passed in 1975, made Sikkim a full-fledged state of India. The Act also provided for the appointment of a Governor for Sikkim and the creation of a Legislative Assembly for the state.

The other options are incorrect. The 37th constitutional Amendment Act (1975) amended the Constitution of India to provide for the creation of a new state of Meghalaya. The 38th constitutional Amendment Act (1975) amended the Constitution of India to provide for the creation of a new state of Manipur. The 36th constitutional Amendment Act (1975) amended the Constitution of India to provide for the creation of a new state of Andhra Pradesh.