The Black-Scholes formula is a popular option pricing model that is widely used in the foreign exchange markets. It is used to price plain vanilla options, which are contracts that give the holder the right to buy or sell a security at a specified price on or before a specified date. The Black-Scholes formula uses various assumptions such as a continuous asset price and constant volatility over a specified period of time to calculate the fair value of the option. Additionally, key inputs such as the current price of the asset, the exercise or strike price, the time to expiration, the risk-free rate of return, and the implied volatility are used in pricing options using the Black-Scholes formula. By utilizing this method, traders in the foreign exchange markets can price different types of option contracts and receive a better assessment of the value of the underlying asset.