Final answer:
Option C, 'Buying another company's bonds with cash,' is considered a cash outflow from investing activities since it involves using cash to make an investment in another company's bonds.
Step-by-step explanation:
The question asks which of the provided options would be considered a cash outflow from investing activities. When it comes to financial statements, particularly the cash flow statement, investing activities relate to the acquisition and disposition of long-term assets and other investments not included in cash equivalents.
In the options provided, the action that corresponds to a cash outflow from investing activities is C) Buying another company's bonds with cash. This is because purchasing bonds is an investment activity that uses cash, and thus it is reported as a cash outflow in the investing section of the cash flow statement. The other options either do not involve cash outflow for investing activities or fall under different categories of the cash flow statement.