Why Is the Operating Activities Section Often Believed to Be

Why is the operating activities section often believed to be the most important part of a statement of cash flows?

A) It gives the most information about how operations have been financed.
B) It shows the dividends that have been paid to shareholders.
C) It indicates a company's ability to generate cash from sales to meet current cash needs.
D) It shows the net increase or decrease in cash during the period.