The correct answer is B. Investment.
Investment decisions are concerned with the allocation of resources to long-term assets, such as plant and equipment. These decisions are important because they have a significant impact on the firm’s future profitability.
Financing decisions are concerned with the sources of funds that the firm will use to finance its assets. These decisions are important because they affect the firm’s cost of capital and its financial risk.
Dividend decisions are concerned with the distribution of earnings to shareholders. These decisions are important because they affect the firm’s cash flow and its share price.
Controlling decisions are concerned with the monitoring and evaluation of the firm’s performance. These decisions are important because they ensure that the firm is operating efficiently and effectively.