Final answer:
Alfred Newman, Max Steiner, and Erich Korngold used large symphony orchestras to create the grand soundscapes characteristic of Hollywood's Golden Era, mirroring the romantic music of the 19th century.
Step-by-step explanation:
Alfred Newman, Max Steiner, and Erich Korngold achieved the grandeur characteristic of films of Hollywood's Golden Era predominantly by c) utilizing large symphony orchestras. Their lush, emotive scores helped create dramatic, larger-than-life soundscapes that matched the epic storytelling of the time, much like the romantic music of the 19th century.
Unlike modernist composers such as Arnold Schoenberg, who experimented with atonality and unconventional scales, these Golden Era composers drew inspiration from the established musical traditions of classical music and romanticism to impart a sense of majesty and emotional depth to the filmgoing experience.