Question

luis is helping his parents paint a border around the walls of a room. he uses a stencil to repeat the same design on each wall to form one long grapevine with a bunch of grapes every foot along its length. what type of chemical reaction does this best model? replacement decomposition polymerization synthesis

Explanation:

Painting with a stencil is a physical - not chemical - process. But among the given chemical reaction options, none match as it's not a chemical change. However, if we consider the context wrongly assuming a chemical analogy, synthesis is creating something new which is most relevant as he's creating a pattern.

Answer:

synthesis