Explanation:

- Option 1: Creates a database of people affected by COVID-19

- This is incorrect. eSanjeevani is not designed specifically for tracking COVID-19 patients.

- Option 2: Promotes the use of telemedicine

- Correct Answer: eSanjeevani is an initiative of the Government of India to promote telemedicine, allowing patients to consult doctors remotely, thus enhancing accessibility to medical services, especially in rural and remote areas.

- Option 3: Establishes an electronic National Clinical Registry

- This is incorrect. eSanjeevani does not establish a clinical registry; rather, it focuses on providing teleconsultation services.

- Option 4: Efficient promotion of health advisories

- Although related to health, eSanjeevani's primary purpose is not limited to promoting health advisories but facilitating remote consultations.

In summary, Option 2: Promotes the use of telemedicine correctly describes the objective of the eSanjeevani scheme.