Please choose the correct solution to the question: Learn how to get a wooden box ready to paint, to use for jump ups for athletes.

Solution1: Get a fine piece of sandpaper and smooth the wood by putting the sandpaper in the box, closing the lid and shaking it.

Solution2: Get a fine piece of sandpaper and smooth the wood by rubbing the sandpaper back and forth over the entire surface.

Answer format: solution1/solution2
Answer: solution2