Judging by the structure of your question, I'm assuming they are asking you a comprehension question based on an article you were supposed to read. Since you did not provide the answer choices (and I found an article that might relate to your question on Google), I'm going to venture out to say that the answer is "Oaxaca, Mexico"
EDIT: Hit me up in case the answer I gave you was wrong
For this case we have the following statement:
You will know more after ___________ the classified ad
We must find the correct verb to fill in the blank with the correct conjugation.
The correct verb conjugated for the sentence is:
You answer
We have then:
You will know more after you answer the classified ad
The translation of the sentence in Spanish is:
Sabrás más después de que contestes el anuncio clasificado
Answer:
B. contestes