Answer:
An investor is deciding whether to purchase treasury securities
Explanation:A P E X
The economic action would be most affected by a change to open market operations because an investor is deciding whether to purchase treasury securities.
An open market operation is a macroeconomic activity in which a central bank provides liquidity in its currency to a bank or group of banks.
The change in the open market operations influenced the economic activity when investor is debating whether or not to buy Treasury bonds. This activity of an investor is influenced by these operations.
Therefore, option A is correct.
Learn more about open market, refer to:
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