Final answer:
When we draw an investment demand curve, we hold constant all of the following except the present stock of capital goods.
Step-by-step explanation:
When we draw an investment demand curve, we hold constant all of the following except c. the present stock of capital goods.
The investment demand curve shows the relationship between the interest rate and the level of investment spending. Factors such as the expected rate of return from the investment, the interest rate, and business taxes can all affect the level of investment demand.
However, the present stock of capital goods is not directly related to the investment demand curve.