Answer: decrease
Step-by-step explanation:
It should be noted that there is an inverse relationship between bonds and interest rate. This implies that when there is a rise in interest rates, the prices of bond will fall and when there is a fall in interest rates, the prices of bond will rise.
Since bonds typically pay fixed interest rate, this will becomes more attractive when there's a fall in interest rates and more investors will demand for bond which will invariably lead to rise in price.