D. Catalyst
A catalyst is a reason for an event to occur.
Answer:
C is the answer, please give brainliest :)
Explanation:
<span>D. instructive
This passage does a good job describing the way that credit cards work and mentioning the fact that many people don't actually know this. It's a good resource for someone thinking about getting a credit card if they're not completely prepared for the challenges it presents. </span>