Ray wants to learn how to replace the chain on his bicycle. He processes information best when he can watch and listen as something is being completed. Which medium would best help Ray in this situation?

A) a video demonstrating how to repair a bicycle chain

B) a diagram of his bike showing where the parts are located

C) a brochure that includes steps and pictures of a bike being assembled

D) a podcast explaining each step a person should take to replace a bike chain