Explanation:

- Second Schedule of the RTI Act, 2005: It lists certain public authorities that are exempt from providing information under the RTI Act.

- Option 1: Central Govt

- The Central Government has the authority to amend the Second Schedule of the RTI Act, 2005.

- This means they can add or remove organizations from the list.

- Option 2: State Govt

- State Governments do not have the power to amend the Second Schedule.

- Their authority is primarily limited to managing state public authorities.

- Option 3: Both

- Both Central and State Governments do not jointly amend the Second Schedule.

- This responsibility lies solely with the Central Government.

- Option 4: None

- This option is incorrect as the Central Government has the explicit power to make amendments.