For this case we have the following expression:
It is advisable for children to __________ their parents.
We must choose the correct verb to fill in the blank.
We note that the verb is for the third person of the plural:
They = Children
Therefore, the correct word is:
Escuchen = listen
The complete sentence in English is:
It is advisable for children to listen to their parents.
The correct translation in Spanish is:
Es aconsejable que los niños le escuchen a sus padres.
Answer:
A. escuchen