Answer: b. guarantor.
Step-by-step explanation:
Guarantors who can also be called Sureties, are people who promise to pay the debt of another person if that person fails to honor the debt obligation. To be a Guarantor, you must have assets that will be able to cover the debt and you will probably have to pledge the assets to be collateral for the debt. Having a Guarantor increases the trust that the lender has in the lendee.
Jenny is a Guarantor as she has promised to repay the loan should Garrett default on it.