Answer:
Juan es <u>un</u> chico inteligente.
Explanation:
The reason why A is correct is because Juan is singular and masculine, making the answer 'un.'
I hope this was helpful to you! If it was, please consider rating, pressing thanks, and marking my answer Brainliest. It would help a lot. Have a great day!
Remember: when there are 2 or more subjects, you use the -an/-en conjugation.
1. trabajan
2. estudian
La respuesta es cepillas, no me digan nada si esta malo
