आपूर्ति-पक्ष अर्थशास्त्र (Supply-side Economics) के सिद्धांत मुख्य रूप से निम्नलिखित में से किस पर ध्यान केंद्रित करते हैं?

Arrange the following steps in the logical sequence of Supply-Side Fiscal Policy (Reaganomics) as it leads to economic expansion, starting from the policy intervention: 1. Reduction in marginal tax rates on corporations and high-income groups 2. Stimulation of productive activity and private investment 3. Increase in the long-run aggregate supply of the economy 4. Flow of benefits to lower-income groups through investment and employment 5. Promotion of long-term economic growth

Supply-side bottlenecks can constrain growth even when demand conditions are supportive. A supply-side bottleneck is best described as: