Explanation:

- The United Nations' World Economic Situation and Prospects Report, 2019, provides insights into the expected growth of the Indian economy for the year 2020.

- Option 1: 7.1%

- This is a plausible growth rate scenario for an emerging economy like India. However, it was not the expectation per the UN report.

- Option 2: 7.6%

- This might be considered optimistic and would imply very robust growth.

- Option 3: 7.8%

- This suggests even higher growth, indicative of a highly favorable economic climate.

- Option 4: 7.2%

- Correct Answer: According to the report, this was the expected growth rate for the Indian economy for 2020.