Answer:
C. Young adults do not have experience managing money.
Step-by-step explanation:
A and B both mention topics related to the topic of the claim, but do not provide support or opposition to the claim itself. A states a fact about how credit cards are used, and B states that managing money is an important skill. Both are true, but neither answers the question.
D provides opposition to the claim, not support for it because it gives a reason college students should have credit cards.
C Provides a valid support to the claim, because it gives a good reason why college students should have credit cards.
I tried to type as fast as I could once I saw your question. I hope this helps, but if you need a little more context, someone recently asked the same question, and I went into more detail, so feel free to search it if you need.