What defines the stylistic approach of Art Nouveau?

The defining characteristic of Art Nouveau is its use of sinuous curving lines and organic motifs. This artistic movement, which gained popularity in the late 19th and early 20th centuries, is known for its inspiration drawn from nature. Artists and designers employed flowing, harmonious forms that mimic the shapes found in the natural world, such as flowers, plants, and other organic elements.

The movement sought to break away from the rigid, historical styles that preceded it and aimed instead to create a more fluid, dynamic aesthetic. The use of sinuous lines not only contributed to the visual appeal of structures and furniture but also expressed a sense of movement and grace, which was a hallmark of the Art Nouveau style.

In contrast, the other options reflect characteristics that are not aligned with Art Nouveau. The emphasis on rigid symmetry and straight lines is indicative of more classical or neoclassical designs. A focus on simplicity and utility typically aligns more with modernist movements, where functionality is prioritized over decorative elements. Lastly, incorporating large, block-like forms tends to relate more to Bauhaus or modernist architecture, which contrasts sharply with the delicate and intricate designs favored by Art Nouveau.