The answer is a or at least I think...
Answer:
D) a personas interesadas en la enseñanza del español.
Un is an a like he is a doctor in Spanish is el es UN doctor and the word “un” have an female that is una an example she is a nurse in Spanish is Ella es UNA doctora
1. Vamos a
2. Va de
3. Van a
4. Voy a
5. Van al
6. Vas a
“Escucha” because the prefesora is usted in this conjugation.
