Answer :
Final answer:
A standard string quartet consists of two violins, one viola, and one cello. Each of these musical instruments plays a unique role within the quartet, complementing the others to produce a rich blend of sounds (option a).
Explanation:
String quartets are an integral part of Western classical music. The standard instrumentation for a string quartet includes two violins, one viola, and one cello. In essence, your option b is the correct answer. Each instrument in the quartet plays different roles, with the first violin generally playing the melody, the second violin and viola playing harmony, and the cello providing bass lines.
Orchestras and string quartets utilize the distinctive tones of their diverse instruments to create a rich and complex soundscape. For instance, the violin might play high frequency notes while the cello plays lower frequency notes, thereby producing a resonant and harmonious blend of sounds as shown in Figure 17.27.
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