Answer:
Because the current money multiplier is 2, the Fed would BUY $500,000 worth of bonds, INCREASING the monetary base and so increasing the money supply by $1 million.
Explanation:
if the Fed wants to increase the money supply by $1 million, then it would need to purchase US securities worth $500,000. The formulas used to calculate the impact of the Fed's operations are:
increase in money supply = additional funds x money multiplier
$1,000,000 = additional funds x 2
additional funds = $1,000,000 / 2 = $500,000