Answer:
b. the interest rate falls, which causes the opportunity cost of holding money to fall.
Explanation:
the demand for money (the declension to hold money) is inversely related to interest rate. if interest rate is high, individuals would prefer to hold bonds and the demand for money would fall. if interest rate is low, individuals would prefer to hold money.
the opportunity cost of holding money is what would have been earned if money was invested. if interest rate is low, individuals would prefer to hold more money because the amount that would be earned if money was invested in bonds would be low, so the opportunity cost of holding money would be low
