Read the following scenario and answer the question that follows. A city's local coffee shop market has experienced several changes over the last quarter. Consider these four events:

1. A new international trade agreement has caused the wholesale price of imported coffee beans to decrease by 15%.
2. A popular health and wellness blog, widely read by residents, published an article highlighting the negative health effects of caffeine, leading to a city-wide trend of reduced coffee consumption.
3. The municipal government passed a new regulation requiring all food service establishments, including coffee shops, to use more expensive, commercially compostable cups and lids.
4. The national central bank announced an increase in the benchmark interest rate, making it more expensive for consumers to borrow money for large purchases.

From the microeconomic perspective of the supply side for coffee in this specific city, which of these events would directly influence the collective decisions and actions of the coffee shop owners? Explain your reasoning for each event you select.