Based on the table:
1. Cutting Hair (W): When you cut hair, you're physically changing its length, which is a change in size.
2. Chopping Onions (X): Chopping onions involves physically altering the size and shape of the onion into smaller pieces.
3. Making Lemonade (Y): This is primarily a chemical change where you're mixing lemon juice, water, and sugar. While you are combining ingredients, you aren't altering the size or shape of any solid materials in the way that cutting or chopping does. Instead, you are dissolving and mixing liquids and solids at a molecular level.
4. Sanding Wood (Z): Sanding wood is a physical change where you're altering the surface of the wood, making it smoother and changing its texture.
Out of these actions, only "Making Lemonade" doesn't involve a direct physical change in size or shape. Instead, it's more of a chemical change and mixture of ingredients.