Who help Bandung build the temples?

Helped by

The spirit of demons,

Bandung Bondowoso started building the temples. Approaching midnight, the work would nearly be done. Rara Jonggrang knew this and thought, “What shall I do? Bandung is smarter than I, I would lose against Bandung.
Suddenly she got an idea. She woke up all the women in the palace and ordered them to make noisy sounds of grinding rice so that the roosters thought it had already been dawn.
  Which of following is the reason why parents place their child up for adoption?