<h3>Decide if the following sentence is grammatically correct or incorrect, ¿Quieres saber la respuesta? - Sí las quiero saber.</h3>
Answer : Incorrect
It should be: ¿Quieres saber la respuesta? - Sí, la quiero saber.
Translation: Do you want to know the answer? - Yes, I want to know it.
Explanation: The question refers to the direct object, which is "la respuesta", so the direct object in the answer must agree in gender and number with "la respuesta", which is a feminine, singular noun, but in this answer the object direct pronoun is "las" which is a feminine and plural pronoun, so it does not agree, because it should be "la" in the singular.