[Q]: Which of the following solutions is better for the following goal:
To test baking soda to make sure it's still good.

[A]: Add a teaspoon of baking soda to a 1/2 cup of hot water. If it doesn't bubble, it's time to throw it away.

[Q]: Which of the following solutions is better for the following goal:
How to shape soap.

[A]: Drip the soap mixture into a silicone mold of any figure. Let the soap set until firm or dry. Pop the soap out of the mold.

[Q]: Which of the following solutions is better for the following goal:
Make a wooden crutch.

[A]: Cover forked end of branch with padding and duct tape.

[Q]: Which of the following solutions is better for the following goal:
Make sure the fluffy ball fits snugly in the cap

[A]:
Place the ball inside the cap and if it doesnt fit, add more stuffing