Question:
Goal: How to ensure airflow through a window?

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Keep the window open.

Question:
Goal: What can you use to make your arm warmers inexpensively?

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
use an old long-sleeve shirt that you no longer wear.

Question:
Goal: cleaver

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
cuts chicken bone