By which amendment of the Constitution, 'Delhi' has been made National Capital Region?

1. A

   75th

   (a) 75th. This option claims the 75th Constitutional Amendment designated Delhi as the National Capital Region, which is incorrect because that amendment relates to the establishment of Rent Tribunals.

2. B

   73th

   (b) 73th. This option claims the 73rd Constitutional Amendment made Delhi the National Capital Region, which is factually wrong as that amendment pertains to Panchayati Raj institutions.

3. C

   70rd

   (c) 70rd. This option claims the 70th Constitutional Amendment gave Delhi National Capital Region status, which is incorrect because the 70th Amendment provides for the inclusion of members of the Legislative Assemblies of NCT of Delhi and Puducherry in the Electoral College for the Presidential election.

4. D

   69th

   (d) 69th. This option claims the 69th Constitutional Amendment Act, 1991, granted special status to Union Territory of Delhi as National Capital Territory and established a legislative assembly, making it the correct choice.

Summary. Official key is (d) corresponding to the 69th Constitutional Amendment Act of 1991. This landmark amendment inserted Articles 239AA and 239AB into the Constitution, giving Delhi a special administrative setup with its own legislative assembly and council of ministers. The other amendments cited pertain entirely to different constitutional matters such as rent tribunals and local governance. Therefore, option (d) is uniquely accurate and stands as the correct answer.