The answer is A because all the others are wrong. You are saying that Marcos was studying when I arrived at his house.
answer:
Hola! ¿Puedo comprar un sobre y sellos? Quiero pagar en efectivo, porfavor. ¿Podría decirme en dónde está el buzón? Gracias!
hope this helps! :o)
*mark brainliest, pleeasee :o))*
Quiere because it is the first verb so it will be conjugated