What are the three elements of commercial photography?

How do you say this? There must be many answers.

The students upstairs answered with three elements of photography: light, composition and tone, which I think is ok.

However, there are differences between commercial photography and photography itself. Have a strong commercial advertising intention.

Commercial photography, as its name implies, refers to photography activities for commercial purposes. In a broad sense, it includes the production of all images used to sell goods, write events or introduce books, while in a narrow sense, commercial photography usually refers to advertising photography, not only because advertising photography plays an important role in it, but also because of its natural and strong commercial color.