Explanation:

- Option 4, Bimal Julka, was appointed as the Chief Information Commissioner (CIC) in March 2020.

- Bimal Julka was a retired Indian Administrative Service (IAS) officer.

- Juli served as Information Commissioner prior to becoming the CIC.

- Ajay Bhusan Pandey is a notable Indian bureaucrat but not related to this specific position in March 2020.

- Satish Kumar Sharma and Amita Pandove are not associated with the appointment of CIC in 2020.

- The position of CIC is crucial for transparency and upholding the Right to Information Act in India.