[Q]: Which of the following solutions is better for the following goal:
To fold ingredients when a recipe calls for it.

[A]: When a recipe asks you to "fold" something into the batter, always start at the bottom of the bowl and sweep the spatula over the top to incorporate the new ingredient gently into the batter. Rotate the bowl to insure even folding.

[Q]: Which of the following solutions is better for the following goal:
To separate egg yolks from egg whites for a recipe, you can

[A]: Crack the egg and carefully catch the yolk in the shell

[Q]: Which of the following solutions is better for the following goal:
DIY seed starters

[A]: save your egg shells, and fill with potting soil.

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

[A]:
keeps water together