1. **Problem Statement:** Analyze the effects on demand and supply curves for the "Island Escape" tour package under different scenarios including price changes, endorsements, and cost increases. 2. **Scenario 1 (Demand Change with Price):** As price decreases from 2100 to 1500, quantity demanded increases from 40 to 100. This follows the Law of Demand which states that quantity demanded moves inversely with price. This is a movement along the demand curve D1. 3. **Scenario 2 (Demand Shift due to Endorsement):** When the international blogger endorses the tour, quantity demanded increases at every price point (from QD1 to QD2). This causes the demand curve to shift rightward from D1 to D2, indicating higher demand at all prices due to increased popularity. 4. **Scenario 3 (Supply Relationship to Price):** As selling price increases from 1500 to 2100, quantity supplied increases from 40 to 100 per QS1 data. This demonstrates the Law of Supply: higher prices incentivize producers to supply more. This is a movement along the supply curve S1. 5. **Scenario 4 (Supply Shift due to Cost Increase):** The new environmental tax increases costs, reducing quantity supplied at each price point (QS1 to QS2). This is a leftward shift of the supply curve from S1 to S2, indicating decreased supply at all price points. 6. **Graph Analysis:** - Demand curve shifts right (D1 to D2) due to endorsement (demand increase). - Supply curve shifts left (S1 to S2) due to cost increase (supply decrease). - Movements along curves occur when price changes influence quantity demanded or supplied without external factors. **Final takeaway:** Endorsements increase demand, causing demand curve shifts; cost increases reduce supply, causing supply curve shifts. Price changes cause movements along respective curves.