Fernando: <em>Tuve que comprar unas sillas</em>.
Víctor: <em>¿Dónde</em> ______ <em>compraste? </em>
Translation:
Fernando: I had to buy some chairs.
Victor: Where [blank] you buy?
To find the correct direct object pronoun, identify the object. Our object is <em>un</em><em>as</em><em> sill</em><em>as</em>, which is feminine plural.
<u>The options</u>
A. <em>los</em> - the ~masc. plural
B. <em>la</em> - the ~fem. singular
C. <em>las</em> - the ~fem. plural
D. <em>lo</em> - the ~masc. singular
The gender and grammatical number between the object and the object pronoun must agree, thus the correct answer is (C).
<h3>
Answer:</h3>
C.<em> las</em>