What is the main function of the Federal Open Market Committee?

Extend loans to consumers.

Oversee administration of financial regulations.

Set monetary policy to promote economic growth.

Write laws governing finance and trade

The last one is the answer

The answer is: Oversee administration of financial regulations.

The federal market open committee would create financial regulations according to what they believe will benefit united states the most. These regulations do not necessarily always promote economic growth. For example, during inflation they might create regulations that slow down the growth of the economy to protect the value of the currency.