The answer is c because it has an accent so "ayudaré" means that he is going to help and if you write ayudare without the accent I think it's wrong.
Answer:
Translation for your sentence is - ( When does Martin Fierro break his guitar in the book?
The correct answer is C) cuidar de.
esta, cerrada
estamos, cansados
estoy, feliz
esta, limpio
están, contentas
esta, cerrada
están, equivocados
esta, ordenada