Who is the chief executive authority of a Union Territory in India?

Correct option is A

The correct answer is President of India.
President:
○ Articles 52 to 78 in Part V of the Constitution deal with the Union executive.
○ The Union executive consists of the President, the Vice-President, the Prime Minister, the Council of Ministers and the Attorney General of India.
○ The President is elected not directly by the people but by members of the electoral college consisting of:
 ▪ the elected members of both the Houses of Parliament;
 ▪ the elected members of the legislative assemblies of the states; and
 ▪ the elected members of the legislative assemblies of the Union Territories of Delhi and Puducherry
○ The President’s election is held in accordance with the system of proportional representation by means of the single transferable vote and the voting is by secret ballot.
○ The President holds office for a term of five years.