Answer:
The answer is D, "to build her credit history"
Step-by-step explanation:
credit history is someone's background related to payments of debt. It is a record that contains information about how responsible someone is associated with debt.
It is important to build a good credit history because it is useful for example when you request a loan on a bank, when you buy stuff under credit, also when you buy thing with your credit card and so on. To sum up, credit history is intended to show how responsible you are paying your debt.