Final answer:
To answer the question '¿Compraste los huevos?' using a direct object pronoun, you would say 'Sí, los compré.'
Step-by-step explanation:
To answer the question using a direct object pronoun, you would say Sí, los compré. The direct object pronoun for 'huevos' (eggs) is 'los' because it is plural and masculine. Since the eggs are the direct object of the sentence, they are being bought, so the pronoun 'los' is used to replace them.
Learn more about Using direct object pronouns in Spanish