Final answer:
A debit card allows for an electronic money transfer from your bank account to the seller when making a purchase. It is directly tied to your savings or checking account, in contrast to credit cards which act as a short-term loan.
Step-by-step explanation:
The card that allows an electronic money transfer when making a purchase is a debit card. A debit card is connected directly to your bank account, allowing you to spend the money you have on hand in your savings or checking account. Unlike a credit card, which offers a short-term loan, the funds you use with a debit card are immediately deducted from your account. Smart cards are similar in function to debit and credit cards but have money stored directly on them, which can be used for specific purchases or in predetermined places.