Question:
Goal: thermos

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
is used to test. corrosive acid

Question:
Goal: How to prevent a mirror from getting smudges?

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Use a makeup swab and some rubbing alcohol on the spot whenever you see a smudge appear

Question:
Goal: Reduce appearance of a skin bruise.

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Freeze a butter knife for 20 minutes, then put on bruise.