Music appreciation the early twentieth century: the serialist whose compositions are the epitome of brevity and economy of material is                a.  arnold schoenberg.      b.  alban berg.      c.  richard strauss.      d.  anton webern.

The answer is D) Anton Webern 

The Austrian composer Anton Webern, born in 1883, was famous for his radical style, which featured very concise music and strict adherence to the twelve-tone technique. Although his music did evolve over time, it retained this stoic and minimalist identity, influencing the music of future composers from Austria to the US in the decades to come. 

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