Question

Which direct object pronoun correctly completes the conversation? Fernando: Tuve que comprar unas sillas. Víctor: ¿Dónde ______ compraste? los, la, las, lo

Answer 1

las

its las because it replacing the chairs and the chairs are feminine and plural in this sentence 

Answer 2

unas sillas(some chairs) = feminine, plural

Las = feminine, plural

¿Dónde las compraste?