As the economy grows, interest rates tend to rise because

firms have more investment opportunities and so the firms issue more bonds and the increased supply of these bonds will cause the price of the bonds to decrease and bond prices and interest rates move in opposite directions.

firms have fewer investment opportunities and so the firms issue more bonds and the increased supply of these bonds will cause the price of the bonds to decrease and bond prices and interest rates move in opposite directions.

firms have fewer investment opportunities and so the firms issue fewer bonds and the decreased supply of these bonds will cause the price of the bonds to increase and bond prices and interest rates move in the same direction.