A Classical era string quartet comprises two violins, a viola, and a cello. This arrangement allows for a balanced interplay of melodies and harmonies. Prominent composers like Haydn and Beethoven utilized this ensemble format effectively. ;
A classical era string quartet consists of two violins, a viola, and a cello, which create a balanced and harmonious sound. This arrangement allows for rich melody and harmony, particularly highlighted by composers like Haydn and Beethoven. Therefore, the correct answer is option C.
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