What statement best describes the main theme at the beginning of Symphony No. 5?

The main theme at the beginning of Symphony No. 5 is characterized by its powerful and memorable motif, typically introduced by the brass section. This theme is not only bold but also provides a strong foundation for the entire symphony. The texture can be described as homophonic because, while the brass carries the main melody, other instruments support it with harmonies that complement the thematic material. This clear distinction between melody in the brass and harmonic support from other sections exemplifies a homophonic texture, making option B the best description.

The orchestration and textural characteristics of the other options do not align with the true nature of the symphony's opening. The use of woodwinds or strings for the main theme does not accurately capture the essence of the opening motif, and the mention of polyphonic or contrapuntal textures fails to reflect the clarity and directness of the thematic expression found in this iconic work.