1) What is the type of market for selling bottled water, Tap water and coca cola?

2) Policymakers can introduce policy to reduce the price set by monopolies? What is the 'average cost pricing rule' implement by the government to regulate the market?

3)What is the characteristics of public good and externalities? What is market failure?

4) How the cost of externalities are internalized to achieve the social equilibrium level in the market?

5) Why Oligopoly firms choose to form a cartel in the market?