Question: Prepare a wood surface for spray painting.
Option 0: Sand the surface with sandpaper.  Start with 80 grit and move down to 120.  Clean the surface with a damp rag then let dry.  After it is dry, use a light layer of marshmallow fluff to make sure the paint sticks.
Option 1: Sand the surface with sandpaper.  Start with 80 grit and move down to 120.  Clean the surface with a damp rag then let dry.
Answer: 1