Finish the following sentence with the best choice: how do you make soap that floats?

Choices:
- put the soap in a bathtub, and prop up with a lot of bubbles from your bubble bath.
- put the soap base in the microwave to melt, and then whip a lot of air into it.

Answer:
put the soap base in the microwave to melt, and then whip a lot of air into it.