Final answer:
The underlined pronoun 'l' in the sentence 'Je vous l'explique' replaces a direct object.
Step-by-step explanation:
The underlined pronoun 'l' in the sentence 'Je vous l'explique' replaces a direct object. In French, a direct object is the noun or pronoun that directly receives the action of the verb. It answers the question 'what?' or 'who?'
Learn more about Direct and indirect objects in French