An exchange rate is:
A. The value of one currency relative to another.
Example: If 1 US dollar can be exchanged for 0.85 Euros, the exchange rate between USD and Euros is 0.85.
Explanation: Exchange rates determine how much of one currency you can get in exchange for another. They fluctuate based on various factors like economic conditions, interest rates, and geopolitical events. Understanding exchange rates is crucial for international trade, travel, and investment.