[Q]: Which of the following solutions is better for the following goal:
To make a curved surface using a flat EVA foam sheet.

[A]: Take the flat sheet of EVA foam and heat it using a hair dryer. Mold over a rounded shape while the sheet is still hot.

[Q]: Which of the following solutions is better for the following goal:
How to make Italian Lemon Ice at home.

[A]: Use Ice tray to freeze Lemonade. Use from carton at grocery stores. When lemon (Ice) is frozen, place ice cubes in a blender. Mix on low at first then raise speed. When blended serve in a dish.

[Q]: Which of the following solutions is better for the following goal:
To humanely kill an insect for a child's bug collection,

[A]: capture the insect and place it in a container in the freezer over night.

[Q]: Which of the following solutions is better for the following goal:
To preheat the oven,

[A]:
press the bake button on the oven, set to the desired temperature, then wait until the oven beeps at you to know that it is at the desired temperature.