Question:
Goal: To make a color of oil paint lighter,

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
squeeze equal amounts of the original color and white onto a palette, and mix them with a palette knife blade, adding more of either color to adjust the shade.

Question:
Goal: To rub scratches out of a pair of sunglasses.

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Apply a small amount of toothpaste on a soft cloth and then rub it into the sunglasses. Rinse with water.

Question:
Goal: How can I remove red wine stains?

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Gently blot stain with a cloth soaked in white wine to remove the stains.