Answer: the steady-state amount of investment can be thought of as a break-even amount of investment because: the quantity of investment just equals the amount of: "B) capital needed to replace depreciated capital and to equip new workers."
Explanation: According to the Solow growth model an economy is in a steady state when it makes the most efficient use of its resources. That is, the state in which the saving or investment is equal to the depreciation of capital.