Let's analyze the question asking which committee recommended a poverty line based exclusively on nutritional requirements. Understanding the methodologies used by different committees for estimating poverty in India is crucial.

Understanding Poverty Estimation in India

Poverty estimation in India has evolved over time, with various committees appointed to define the poverty line. These committees used different criteria and methodologies, leading to varying estimates of poverty.

Analysis of Committees and Their Methodologies

We need to examine the approaches taken by the committees mentioned in the options:

• Alagh Committee (1979): This task force defined the poverty line based on a minimum daily nutritional requirement. For rural areas, it was set at 2400 calories per person per day, and for urban areas, it was 2100 calories per person per day. Based on these calorie requirements, the committee determined the per capita consumption expenditure needed to meet this nutritional level. Their recommendation was indeed based exclusively on these nutritional criteria.
• Lakdawala Committee (1993): This expert group retained the calorie norms recommended by the Alagh Committee. However, it made significant methodological changes, such as using state-specific poverty lines and updating the poverty line using the Consumer Price Index of Industrial Workers (CPI-IW) for urban areas and the Consumer Price Index of Agricultural Labourers (CPI-AL) for rural areas. While starting with nutritional requirements, its methodology incorporated price indices for updating.
• Tendulkar Committee (2009): This expert group moved away from the calorie norm-based poverty line used by previous committees. It recommended a poverty line based on the consumption expenditure basket derived from the 2004-05 Tendulkar methodology, which included expenditure on food, education, health, clothing, and footwear. It used the Mixed Reference Period (MRP) consumption data. This was a significant shift from exclusively nutritional criteria.
• Rangarajan Committee (2014): This expert group also reviewed poverty estimation methodology. It proposed a poverty line based on a combination of nutritional requirements (using desired levels of protein and fat in addition to calories), essential non-food expenditures (education, clothing, conveyance, etc.), and behavioral consumption patterns of the poor. This approach considered more than just nutritional needs.

Comparing the approaches, the Alagh Committee was the first to define the poverty line explicitly and exclusively based on the minimum daily calorie intake for rural and urban populations.

Based on this analysis, the Alagh Committee was the one that recommended a poverty line purely based on nutritional requirements.

Revision Table: Key Poverty Committees

Additional Information: Evolution of Poverty Lines

The method for estimating the poverty line in India has changed significantly over time. Initially, the focus was primarily on the minimum expenditure required to meet basic food (calorie) needs. Over the years, the understanding of basic needs expanded to include non-food items like education, health, clothing, and shelter. The methodologies also improved, incorporating better price indices and consumption data collection methods (like Uniform Reference Period - URP, Mixed Reference Period - MRP, and Modified Mixed Reference Period - MMRP) to provide more comprehensive and arguably more accurate poverty estimates that reflect a broader concept of deprivation beyond just hunger.