[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:
Create a spectrum of light using a prism

[A]: Make a room with a window dark. In the shade of the window have a hole. Let sun light through the hole and into the prism. A rainbow will appear.

[Q]: Which of the following solutions is better for the following goal:
How can I line a wooden box for a DIY dog pool?

[A]: Use a plastic tarp to line to hold in water.

[Q]: Which of the following solutions is better for the following goal:
how to make a three-bean salad

[A]:
Boil 1/3 cup cider vinegar, 1/4 cup each sugar and vegetable oil, and salt. Pour over blanched green and wax beans, kidney beans and red onion slices; marinate 1 hour. Season with salt and pepper; top with parsley.