Final answer:
A physical good refers to tangible items that can be seen and touched, like DVDs, comic books, MP3 players, and iPhones. However, an iTunes song is not a physical good because it is a digital product.
Step-by-step explanation:
A physical good refers to a tangible item that can be seen and touched. It includes objects that can be bought and sold, such as DVDs, comic books, MP3 players, and iPhones. However, an iTunes song is not a physical good because it is a digital product that cannot be physically held or touched.