Which of the following is an example of a physical product?

A physical product is something tangible that can be seen, touched, and used, which directly enhances the consumption experience. A cup of coffee fits this definition perfectly as it is a concrete item that customers can hold, drink, and enjoy. It can be purchased in a coffee shop or brewed at home, providing immediate satisfaction and use.

In contrast, a consulting service is an intangible product that consists of expertise and advice, while an online course, though it may come with downloadable materials, is primarily a service delivering knowledge and training. A donation to charity also does not represent a physical product, as it entails giving money or resources to support a cause rather than receiving a tangible item in return. Therefore, a cup of coffee stands out as the clear example of a physical product among the choices provided.