Final answer:
Skipping a credit card payment to prioritize an auto loan payment, as suggested in option C, can have a negative impact on your credit score because missing payments results in negative reporting to credit bureaus.
Step-by-step explanation:
If you're trying to maintain a healthy credit score, which of your friend's advice could negatively affect it? The answer is C: Skip a credit card payment to catch up on the auto loan. Missing a credit card payment can result in a negative mark on your credit report, which could lower your credit score. Generally, it's crucial to prioritize debt payments in a way that prevents falling behind on any single payment. While advice A, B, and D offer positive or neutral strategies for managing debt (like paying off high-interest debt first or extending loan terms), ignoring credit card obligations has immediate detrimental effects on credit. Similarly, auto loan payments should be made on time because late payments or defaults can also negatively impact your credit score.