Q.What is meant by the Foreign Exchange Market?

The question is asking specifically about the market mechanism, not the currency-conversion process itself, so the answer should describe where and how currencies are actually bought and sold.

The Foreign Exchange Market refers to the worldwide network of commercial banks, central banks, currency dealers and other financial institutions that buy and sell currencies on behalf of businesses, governments and individuals who need to convert one currency into another. Unlike a stock exchange, it does not exist in one physical location; instead, it operates electronically across many financial centres around the world, so that some part of the market remains open at almost any hour of the day. Businesses that need to pay foreign suppliers, or that receive payments in a foreign currency and need to convert them into their home currency, carry out these conversions through banks that participate in this market.

Students sometimes describe the Foreign Exchange Market as a single physical exchange like a stock exchange; it is important to state clearly that it is a network of institutions, not one location.