Explanation:

- Capital Loss: This occurs when the value of an asset decreases, leading to a financial loss. It is not related to an increase in the stock of capital.

- Capital Profit: This refers to the gain from selling an asset for more than its purchase price. It involves profit, not the accumulation or increase in capital stock.

- Capital Formation: This is the process of increasing the stock of real capital in an economy. It involves the production and accumulation of capital goods such as machinery and infrastructure, contributing to an increase in a country's productive capacity.

- None of these: This option would apply if none of the above options correctly described the increase in stock of capital.