[Q]: Which of the following solutions is better for the following goal:
To protect your lungs when working with insulation, you can

[A]: Wear a dust mask to avoid breathing in any insulation

[Q]: Which of the following solutions is better for the following goal:
To decorate a sand castle in a safe way,

[A]: use little sea shells along the edges.

[Q]: Which of the following solutions is better for the following goal:
To make wavy lines in Photoshop

[A]: Start with the zig zag tool then use the arrow tool to make the lines curvy.

[Q]: Which of the following solutions is better for the following goal:
To remove ink from the sterilized cans,

[A]:
put some nail polish remover onto a cotton pad and rub it over the surface of the can until the ink comes off.