instruction:
You need to answer a given question containing a blank (_). Your answer must be one of the two objects mentioned in the question, for example "trophy" and "suitcase". Your answer must not contain a word that is not present in the question. Please don't use articles (e.g., the, a) before the answer.
question:
The girl used the crimper more than the straight iron because the _ made her hair straight.
answer:
iron


question:
Jennie used Facebook groups to make a page for her favorite band, and the _ made it hard for her to get it verified.
answer:
band


question:
The ventilation in the city was more polluted than the air in the forest, because the _ was clean.
answer:

air