Answer: Visa card
Step-by-step explanation:
Since Susan has decided that she only needs two credit cards, then she should keep the old Navy card she got her last year of high school and the Mastercard that she opened last month which has no annual fee.
In this case, since she doesn't use the Visa card that she got while in college and th e card pays an $50 annual fee for benefits that she doesn't use that much, thus means that the card isn't beneficial to her. Therefore, she should get rid of the Visa card.