The correct transformation of the sentence "La mascota cantó muchas canciones a los fanáticos" into one using direct and indirect object pronouns is:
La mascota se las cantó.
Here’s the breakdown:
- "muchas canciones" (many songs) is the direct object, which becomes "las."
- "a los fanáticos" (to the fans) is the indirect object, which becomes "les." When used with "se" in this context, the indirect object pronoun changes to "se" for phonetic reasons.
Therefore, the complete conversion (with the use of pronouns) becomes "La mascota se las cantó."