Final answer:
The four pillars of progress toward national happiness in Bhutan include Gross National Happiness (GNH), regulating development projects, health promotion measures, and transition to democratic elections.
Step-by-step explanation:
The four pillars of progress toward national happiness that Bhutan's prime minister mentioned are:
- Gross National Happiness (GNH) as the priority for the country's people
- Regulating development projects based on the impact on culture and people
- Implementation of measures to promote the health and well-being of its people, such as banning tobacco products
- Transition to democratic elections to provide the people with more direct control of their government and country