Answer:
d. defaulting on a principal payment on debt
Step-by-step explanation:
Remember, there is usually a penalty when one (either an investor or creditor) defaults on a payment on debt such as having to paying higher interest rates on the existing debt or even affecting your ability to get needed debt in the future.
It is because of this foreknowledge of the financial distress attached to defaulting, making most investors and creditors try as much as possible to avoid this scenario.