Indian Polity · Polity

With reference to the Systems Approach of David Easton, consider the following statements: 1. In Easton's framework, 'demands' and 'supports' together constitute the input functions that flow from the environment into the political system. 2. The concept of 'feedback' in Easton's model primarily refers to elite bargaining within the political system. 3. Easton treated the political system as an open system interacting continuously with both intra-societal and extra-societal environments. 4. According to Easton, the persistence of a political system depends upon its authoritative allocation of values for society. Which of the statements given above are correct?