Final answer:
Schubert's symphonic style merges elements of both classical and Romantic music, combining the rules and forms of classical music with the emotional expressiveness of Romanticism.
Step-by-step explanation:
Schubert's symphonic style merges elements of both classical and Romantic music. While Schubert followed the basic rules and forms of classical music, his compositions also incorporated the emotional expressiveness and dramatic qualities associated with Romanticism. Schubert, along with other composers such as Schumann, Mendelssohn, and Brahms, can be considered part of the conservative school of Romanticism, as their music retained a strong connection to the classical tradition while still embracing the emotional intensity of the Romantic era.