Question

Rani collected the data of India's National Income for the purpose of study.

Hint:

National income data is crucial for formulating effective economic policies and understanding a country's economic performance.

Answer 1

Step 1: Identify the concept.
This refers to **National Income Accounting**. National income data collection helps in measuring the total economic output of a country.

Step 2: Purpose.
The primary purpose of collecting National Income data is to assess the overall economic health, plan policies, and understand the income distribution in the country.

Step 3: Conclude.
Therefore, Rani is collecting data for the study of India's National Income to understand economic indicators like GDP, GNP, etc.

Final Answer: \[ \boxed{National \; Income \; Accounting} \]