Answer:
The correct answer is: LAS.
Explanation:
Direct pronoun has to agree with gender and number of the noun. So, as the noun is: cards (debit card and credit card), and that is a feminine plural noun in Spanish, then, we have to use a direct pronoun that is both feminine and plural too, and that is in Spanish: las.
Remember that in Spanish mostly the termination -a indicates feminine and the termination -s indicates plural.
