Answer:
c Financial institutions purchase the bonds, which removes money from the system and the interest rate rises.
Step-by-step explanation:
The Fed engages in various strategies to control the amount of money in the economy. On each strategy is the Open Market Operations (OMO) where the Fed regulates cash in circulation by selling or buying of securities.
When the Fed sells treasury bonds they want to mop up cash in the economy and reduce money supply.
As financial institutions purchase the bonds the level of liquidity or cash in the economy reduces.
This will push interest rates up as financial institutions have less cash to lend to customers.