What can a person do with a bookstore gift card?

A bookstore gift card is specifically designed to allow the cardholder to purchase items from that bookstore, which typically includes books, magazines, and sometimes other merchandise like gifts or stationery. By using the gift card as a form of payment within the store, the individual can select any eligible items they wish to buy, thus enjoying the intended purpose of the gift card.

While the other options may present alternatives, they are generally not feasible or standard practices associated with gift cards. For instance, selling a gift card for cash might not be accepted in all situations and could involve transaction fees that reduce its value. Exchanging it for another gift card could also be against the store's policies, as many retailers do not allow exchanges for different store gift cards. Using it for online purchases is only applicable where the bookstore supports online shopping and accepts gift cards as a payment method, which may not be the case for all bookstores.

Therefore, choosing to buy a book from the store directly aligns with the function of a gift card, making it the most appropriate action a person can take with such a card.