What is the primary purpose of a central bank conducting open market operations as part of an expansionary monetary policy?

The primary purpose of a central bank conducting open market operations during expansionary monetary policy is to increase the money supply in the economy. This is done by buying government securities, like bonds, from banks and financial institutions. When the central bank purchases these securities, it gives banks more money, which they can then lend to businesses and consumers. For example, if a central bank buys $1 million in bonds, the banks receive that money and can use it to offer loans, helping to stimulate spending and investment. This process helps to lower interest rates and encourage economic growth, especially during times of recession or slow economic activity.