Final answer:
Commercial photography involves advertising products, documenting fashion trends, and promoting innovation in techniques.
Step-by-step explanation:
Commercial photography serves multiple purposes. It doesn't just advertise new products and services, but also documents fashion trends at different times in history. For example, commercial photographs from the 1920s can provide insight into the popular clothing styles of that era.
Additionally, commercial photography provides employment opportunities for artists who may not have other outlets for their work. This answers option b, which states that it allows for many artists to work who might otherwise be unemployed.
Furthermore, commercial photography often encourages the use of new and innovative techniques to make the photographs more engaging and appealing. This addresses option c, which says that commercial photography encourages the use of new and innovative techniques in photography.
Thus, the correct answer is option d - accomplishes all of the above.
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