Based on the options for this question, the advantage of using a credit card here is that they are convenient. Most people use a credit card because they have a higher balance limit over the funds they actually have in cash for the month. By using a credit card, they don't have to worry about what they are buying and instead, keep charging to the card. Although it is very easy to charge more than you can pay off each month, this is not a good because then you may be charged monthly interest and/or a late fee.
