[Q]: Which of the following solutions is better for the following goal:
How To care for your teeth

[A]: To care for your teeth, be sure to floss once a day to remove plaque.

[Q]: Which of the following solutions is better for the following goal:
How to remove dust off an old book?

[A]: Blow on the book hard, and dust it off with your hands.

[Q]: Which of the following solutions is better for the following goal:
To test a homemade facial mask in an inconspicuous spot in case of irritation

[A]: A spot on below your ears

[Q]: Which of the following solutions is better for the following goal:
oil

[A]:
can make the floor slippery