A balance of payments crisis is best described as A. a sharp change in foreign reserves sparked by a change in expectations about the future exchange rate. B. a sharp change in foreign reserves sparked by a change in expectations about the level of imports. C. a sharp change in interest rates sparked by a change in expectations about the level of imports. D. a sharp change in foreign reserves sparked by a change in expectations about domestic production. E. a sharp change in interest rates sparked by a change in expectations about the level of exports.

1. which one of the following would be an example of a supply-side market failure? a. a gas station is slowly leaking diesel fuel from its underground tanks, and after the leak is discovered, the business immediately cleans up the pollution at its own expense. b. a gas station is slowly leaking diesel fuel from its underground tanks, but the state uses taxpayer money to clean up the pollution rather than requiring the business to pay. c. your business wants to attract repeat customers by putting on a customer-appreciation picnic at a public park, but you decide not to because you couldn't prevent noncustomers from consuming the food and entertainment you provided. d. everyone rushes to the local retail outlet at midnight on the day of the release of a new video game console, and the store runs out before everyone is able to buy one.