Grenada uses the East Caribbean dollar and has St. George's as its capital.
The East Caribbean dollar, abbreviated EC$ and assigned the ISO code XCD, is a shared currency used by several members of the Organisation of Eastern Caribbean States. It is issued by the Eastern Caribbean Central Bank and is divided into 100 cents. Since 1976, it has maintained a fixed exchange rate of EC$2.70 to one U.S. dollar.
St. George's is Grenada's capital and largest city. The city grew around a horseshoe-shaped natural harbour on the island's southwestern coast. French colonists founded the settlement in the seventeenth century, and it later took its present name under British rule, honoring Saint George, the patron saint of England.
Grenada is often called the “Island of Spice” because nutmeg and mace have long been important exports. Its territory includes the main island, Carriacou, and Petite Martinique. The other answer choices are Caribbean countries, but Haiti, Jamaica, and Barbados do not combine this capital-and-currency pair.