[Q]: Which of the following solutions is better for the following goal:
Make a peanut butter and jelly sandwich.

[A]: On one slice of bread, spread some jelly. On another slice of bread, spread some peanut butter. Put the two pieces of bread together, with the moist sides facing each other.

[Q]: Which of the following solutions is better for the following goal:
To pull a nail out of a board,

[A]: place the claw end of the hammer under the head of the nail, the use the hammer as a lever to extract out of the board.

[Q]: Which of the following solutions is better for the following goal:
How to Kill Green Hair Algae in a Freshwater Aquarium

[A]: To quickly kill green hair algae in an aquarium, you can spot treat with 3% Hydrogen peroxide, around 1mL per 10g water volume. Turn off the filters, and fill a syringe with the peroxide. Spray directly on the algae. Leave the filters off for about 15 minutes, do a 25% water change, and turn the filters back on. You should notice the algae starting to turn reddish or brown by the next day. Repeat as necessary.

[Q]: Which of the following solutions is better for the following goal:
ice cream scoop

[A]:
can be polished with towel