Firms require capital to invest in productive opportunities. The best firms with the most profitable opportunities can attract capital away from inefficient firms with less profitable opportunities. Investors supply firms with capital at a cost called the . The interest rate that investors require is determined by several factors, including the availability of production opportunities, the time preference for current consumption, risk, and inflation.

Interest rate

Explanation:

Firms require capital to invest in productive opportunities. The best firms with the most profitable opportunities can attract capital away from inefficient firms with less profitable opportunities. Investors supply firms with capital at a cost called the Interest rate. The interest rate that investors require is determined by several factors, including the availability of production opportunities, the time preference for current consumption, risk, and inflation.

i think the answer to your question is b. directive

answer; tech (a) is correct;