Final answer:
The design style featuring bands of floral materials is known as Biedermeier, which is distinct in its simplicity and elegance compared to the more ornately detailed Art Nouveau style. Option a.
Step-by-step explanation:
The design style that features bands of floral materials is known as Biedermeier. Originating in the 19th century during the Biedermeier period in Central Europe, the Biedermeier style is characterized by its simplicity and functionality combined with elegance. It often involved a clean and simplistic form of decoration with bands or circles of natural materials, such as floral arrangements.
While styles like Art Nouveau also featured the use of nature and floral motifs, they were more so characterized by their long linear lines and asymmetrically moving designs, as well as their ornamental and decorative artwork. Art Nouveau designs were influenced by Japanese art Ukiyo-e and were often highly detailed, with luxurious materials and organic forms, quite distinct in style from the Biedermeier.